Online CAT 2009: Punch of the week(14-March-09)

Person

Sureshbala

Online CAT 2009: Punch of the week(14-March-09)

Author: Sureshbala

Ask The Experts

What is "Punch Of The Week"?

Every week Learnhub's team will post one question each on Verbal Ability and Quantitative Ability of the GMAT Test Preparation
Members can post their answers along with explanations for the next one week.
After one week, Learnhub's team will post the official answer along with the explanation.Besides answering the previous week's questions, Learnhub's Team will come up with the next set of questions for that week as well.

What are the rules of "Punch Of The Week"?

	Every user must refrain from posting sarcastic comments on the answers posted by others.
	Once the Learnhub's team posts the official answer along with the explanation, no comments must be made regarding those questions. In case of further clarification please send a personal message to the respective team member
	If you think that there is something wrong with the explanation of the Learnhub's Team, which seldom happens, please send a personal message to the respective team member informing him/her the same. Posting the same here will not be considered and will be deleted.
	Please bear in mind that only Learnhub's Team members have the privilege of posting questions here. Questions posted by other members will not be entertained and hence will be deleted immediately.

"Punch Of The Week" Team Members

This Week's Punches

Arrange the sentences A, B, C and D to form a logicalsequence between sentences 1 and 6.

1.The modern era may be said to have begun about the year 1895.

A.So great a revolution in scientific thought has not occurred since Copernicus showed that the earth went round the sun.

B.The first step was the experimental demonstration that there exist little electrified bodies very much smaller than a hydrogen atom.

C.Between that year and the year 1900, those researches were begun which have changed our whole conception of matter.

D. Further, these studies have changed our whole idea of the meaning and purpose of physical science.

6.These little bodies were produced by passing an electric current through a glass tube almost entirely exhausted of air.

[1] CABD
[2] BDCA
[3] ACDB
[4] CDAB
[5] CBAD

Quantitative Ability

Consider a circle of radius 10 cm. and center O. Let AOB and COD be two perpendicular diameters of this circle. Consider the two tangent circles of diameters AO and OB respectively. We have now three circles. Construct now 2 circles whose centers are on the segment CD and are tangent to the other three circles.Find the radius(in cm) of the smallest circle?

$(1)\frac{10}{3}$
$(2)\frac{20}{7}$
$(3)\frac{22}{7}$
(4)3.5

Posted on 21-March-09

So, folks here are the correct answers

Sentence Correction

The correct answer is (4).
C is the best sentence to follow 1. The phrase 'that year' in C corresponds with 1895 in 1. The possible answers are (1) and (4). B is a logical precedent to 6 (the continuity link "little bodies"). The best answer is (4).

Problem Solving

The correct answer is (1).

Let x be the radius of one of the smallest circle and N be its centre.
Let M be the centre of the circle with diameter AO.
In the right angle triangle MON, we have
OM^2 + ON^2 = MN^2

$\Rightarrow 5^2 + (10-x)^2 = (5+x)^2$ $[\because OD=10 \quad and \quad ND=x,$ $\Rightarrow ON=(10-x) ]$
$\Rightarrow 25 + 100 -20x + x^2$ = 25 + 10x + x^2

$\Rightarrow x = \frac{10}{3}$

Click here for the next week's Punch

All time most popular tags

Ask The Experts

26 Comments

Top Related Content

Content Type

Lesson

CAT Preparation: Index Page

Ask The Experts .lesson-page-content { font-family:verdana;font-size:13px;text-align:justify} .lesson-page-content ul { list-style-type: disc; font-family:verdana;font-size:13px } table {bo...

View More
Content Type

Lesson

Online CAT 2009: Punch Of the Week (26-Aug-09)

Ask The Experts What is “Punch Of The Week”? Every week Learnhub’s team will post one question each on Verbal Ability and Quantitative Ability of the G...

View More
Content Type

Lesson

CAT 2009: Pigeon - Hole Principle

Ask The Experts In this lesson, we will be taking something called “Combinatorics”. It is generally the nemesis of many students, especially the ones who do not understand why do we need to ar...

View More
Content Type

Lesson

Online CAT 2009: Punch Of the Week (21-Aug-09)

Ask The Experts What is “Punch Of The Week”? Every week Learnhub’s team will post one question each on Verbal Ability and Quantitative Ability of the G...

View More

26 Comments

sreyu_2k said – Sat, 14 Mar 2009 10:02:07 -0000 ( Flag Edit Link )

My take on the verbal question: Option 4) Reasons: C would be the first sentence as it begins with ‘Between that year’.Here that year refers to ‘1895’. Hence it has to be between Option 1,Option 4 or Option 5. Sentence 6 begins with ‘these little bodies’. So obviously the previous sentence should also contain the phrase, which is there in sentence B.Hence the answer is of the pattern C??B.Clearly Option 4 is the answer.
Actions
Reply To This
Author

sreyu_2k

Authority 35

Vote

Current Rating

1

Rate Up

Rate Down

1 Total Vote
Post Comments
Add Comment

Your Reply
freak said – Sat, 14 Mar 2009 10:04:00 -0000 ( Flag Edit Link )

1.) 4 2) 1
Actions
1 Reply
Author

freak

Authority 18

Vote

Current Rating

1

Rate Up

Rate Down

1 Total Vote
Post Comments
1. sauravshandilya said – Sat, 27 Jun 2009 01:49:45 -0000 ( Flag Edit Link )
  
  answer for 1st is 4 (CDAB). 2nd question is a good one.i m trying solve it.
  
  Rating
  
  1
  
  Rate Up
  
  Author
  
  sauravshandilya
  
  Authority 13
Add Comment

Your Reply
bschool_23 said – Sat, 14 Mar 2009 12:03:38 -0000 ( Flag Edit Link )

1]answer for the jumbled paragraph would be option (4)
Actions
Reply To This
Author

bschool_23

Authority 62

Vote

Current Rating

0

Rate Up

Rate Down

No Votes
Post Comments
Add Comment

Your Reply
BARMathew said – Sat, 14 Mar 2009 12:09:08 -0000 ( Flag Edit Link )

im sorry but i didnt kinda get the second que.how do u get tht ans without actually drawing it?
Actions
Reply To This
Author

BARMathew

Authority 21

Vote

Current Rating

0

Rate Up

Rate Down

No Votes
Post Comments
Add Comment

Your Reply
rumnraisin said – Sat, 14 Mar 2009 13:11:07 -0000 ( Flag Edit Link )

According to me, The answer for 1. is B. Explanation: Says the modern era started. Then the first step, description about it. The time period so on and so forth.

Unfortunately I suck at math so not going to attempt the second.
Actions
Reply To This
Author

rumnraisin

Authority 95

Vote

Current Rating

0

Rate Up

Rate Down

No Votes
Post Comments
Add Comment

Your Reply
suraj667 said – Sat, 14 Mar 2009 14:34:07 -0000 ( Flag Edit Link )

it is clear dat C shud cm aftr 1, nd as 6 starts wid ” little bodies”, d previous sentnce shud be B…. So, d correct option wud b 4.

for maths, i dont know how 2 solve it….bt gud ques….
Actions
Reply To This
Author

suraj667

Authority 100

Vote

Current Rating

0

Rate Up

Rate Down

No Votes
Post Comments
Add Comment

Your Reply
roshanagarwal said – Sat, 14 Mar 2009 16:05:09 -0000 ( Flag Edit Link )

answer to ques no.1 is option 4 bt nt understud ques 2)
Actions
Reply To This
Author

roshanagarwal

Authority 49

Vote

Current Rating

1

Rate Up

Rate Down

1 Total Vote
Post Comments
Add Comment

Your Reply
parimallokhande said – Sun, 15 Mar 2009 07:18:32 -0000 ( Flag Edit Link )

answer fr question 1 is option 4 nd next question is option 1
Actions
Reply To This
Author

parimallokhande

Authority 29

Vote

Current Rating

1

Rate Up

Rate Down

1 Total Vote
Post Comments
Add Comment

Your Reply
jagriti kukreja said – Sun, 15 Mar 2009 08:01:07 -0000 ( Flag Edit Link )

1) 2nd is answer
Actions
Reply To This
Author

jagriti kukreja

Authority 13

Vote

Current Rating

1

Rate Up

Rate Down

1 Total Vote
Post Comments
Add Comment

Your Reply
jagriti kukreja said – Sun, 15 Mar 2009 08:01:12 -0000 ( Flag Edit Link )

1) 2nd is answer
Actions
Reply To This
Author

jagriti kukreja

Authority 13

Vote

Current Rating

1

Rate Up

Rate Down

1 Total Vote
Post Comments
Add Comment

Your Reply
bhargavi196 said – Sun, 15 Mar 2009 09:56:47 -0000 ( Flag Edit Link )

I think the answer is option 4.bcoz the 6 th point follows B and option C follows 1 st point.
Actions
Reply To This
Author

bhargavi196

Authority 34

Vote

Current Rating

0

Rate Up

Rate Down

No Votes
Post Comments
Add Comment

Your Reply
ankitarath said – Sun, 15 Mar 2009 15:58:23 -0000 ( Flag Edit Link )

my take for verbal ability is option 4, as B should be the ending sentence, since 6. point speaks about electrified bodies… .thus all other options are eliminated. only 3 and 4 are left. 3rd ne is eliminated as A introduces copernicus haphazardly…so i go for option 4
Actions
Reply To This
Author

ankitarath

Authority 58

Vote

Current Rating

1

Rate Up

Rate Down

1 Total Vote
Post Comments
Add Comment

Your Reply
ankitarath said – Sun, 15 Mar 2009 17:09:39 -0000 ( Flag Edit Link )

i wasnt able to understand the math prob. exactly where the 4th circle fits in. but still on trying, i think it should be option 2. 20/7, approx 2.65 and above…
Actions
Reply To This
Author

ankitarath

Authority 58

Vote

Current Rating

1

Rate Up

Rate Down

1 Total Vote
Post Comments
Add Comment

Your Reply
rakhisoni23 said – Mon, 16 Mar 2009 02:57:46 -0000 ( Flag Edit Link )

Answer for 1st question is 4th option…. dont know how to solve the Maths problem. If some one knows the method to solve that please text it here…
Actions
Reply To This
Author

rakhisoni23

Authority 46

Vote

Current Rating

0

Rate Up

Rate Down

No Votes
Post Comments
Add Comment

Your Reply
sweta_thebest said – Mon, 16 Mar 2009 14:39:59 -0000 ( Flag Edit Link )

first one’s ans is 4th . But i hv no idea bout the 2nd.
Actions
Reply To This
Author

sweta_thebest

Authority 25

Vote

Current Rating

1

Rate Up

Rate Down

1 Total Vote
Post Comments
Add Comment

Your Reply
prashantup8888 said – Mon, 16 Mar 2009 15:42:28 -0000 ( Flag Edit Link )

answer for 1st qus is 4th option…....2nd qus answer is 3rd.
Actions
Reply To This
Author

prashantup8888

Authority 5

Vote

Current Rating

1

Rate Up

Rate Down

1 Total Vote
Post Comments
Add Comment

Your Reply
Dhiviyaa said – Tue, 17 Mar 2009 06:34:45 -0000 ( Flag Edit Link )

answer for 1st question is 4th option
Actions
Reply To This
Author

Dhiviyaa

Authority 96

Vote

Current Rating

0

Rate Up

Rate Down

No Votes
Post Comments
Add Comment

Your Reply
riasharma said – Tue, 17 Mar 2009 13:43:13 -0000 ( Flag Edit Link )

answer to first q is option 4
Actions
Reply To This
Author

riasharma

Authority 140

Vote

Current Rating

0

Rate Up

Rate Down

No Votes
Post Comments
Add Comment

Your Reply
sauravshandilya said – Tue, 17 Mar 2009 17:17:24 -0000 ( Flag Edit Link )

answer for second question is option 1) 10/3 it is good question but can be solved by drawing a neat diag. it uses simple pythagoras theorem…
Actions
Reply To This
Author

sauravshandilya

Authority 13

Vote

Current Rating

1

Rate Up

Rate Down

1 Total Vote
Post Comments
Add Comment

Your Reply
abhiashuster said – Tue, 17 Mar 2009 17:19:39 -0000 ( Flag Edit Link )

answer for first que. is 3
Actions
Reply To This
Author

abhiashuster

Authority 5

Vote

Current Rating

1

Rate Up

Rate Down

1 Total Vote
Post Comments
Add Comment

Your Reply
sandeep jangra said – Wed, 18 Mar 2009 09:50:31 -0000 ( Flag Edit Link )

ans:1=option 4 /ans-2=option3
Actions
Reply To This
Author

sandeep jangra

Authority 44

Vote

Current Rating

1

Rate Up

Rate Down

1 Total Vote
Post Comments
Add Comment

Your Reply
parv_gug said – Wed, 18 Mar 2009 15:27:04 -0000 ( Flag Edit Link )

hi to all.!! this is parv the answer to verbal ability quest is (d) n answer to the quantitative ability is (d) i.e 3.5 c.m
Actions
Reply To This
Author

parv_gug

Authority 5

Vote

Current Rating

1

Rate Up

Rate Down

1 Total Vote
Post Comments
Add Comment

Your Reply
parv_gug said – Wed, 18 Mar 2009 15:28:22 -0000 ( Flag Edit Link )

hi to all.!! this is parv the answer to verbal ability quest is (4) n answer to the quantitative ability is (4) i.e 3.5 c.m
Actions
Reply To This
Author

parv_gug

Authority 5

Vote

Current Rating

1

Rate Up

Rate Down

1 Total Vote
Post Comments
Add Comment

Your Reply
sweshra said – Thu, 19 Mar 2009 14:04:07 -0000 ( Flag Edit Link )

the answer for the verbal qn s option 4 as thats the most logically correct sequence that may be obtained from the given sentences.and for the quants qn, i am stuck!!not able to proceed beyond d diagram stage.those of you who came up with an answer for it, can u please explain hw?
Actions
Reply To This
Author

sweshra

Authority 57

Vote

Current Rating

0

Rate Up

Rate Down

No Votes
Post Comments
Add Comment

Your Reply
RINCY said – Thu, 19 Mar 2009 17:14:06 -0000 ( Flag Edit Link )

The answer to the first Q is [3]ACDB but i just couldn’t understand the next Q….......do give the expaination how ???
Actions
Reply To This
Author

RINCY

Authority 9

Vote

Current Rating

0

Rate Up

Rate Down

No Votes
Post Comments
Add Comment

Your Reply

Sureshbala said – Sat, 21 Mar 2009 07:07:41 -0000 ( Flag Edit Link )

So, folks here are the correct answers

Sentence Correction

The correct answer is (4).
C is the best sentence to follow 1. The phrase ‘that year’ in C corresponds with 1895 in 1. The possible answers are (1) and (4). B is a logical precedent to 6 (the continuity link “little bodies”). The best answer is (4).

Problem Solving

The correct answer is (1).

Let x be the radius of one of the smallest circle and N be its centre.
Let M be the centre of the circle with diameter AO.
In the right angle triangle MON, we have
OM^2 + ON^2 = MN^2

$\Rightarrow 5^2 + (10-x)^2 = (5+x)^2$ $[\because OD=10 \quad and \quad ND=x,$ $\Rightarrow ON=(10-x) ]$
$\Rightarrow 25 + 100 -20x + x^2$ = 25 + 10x + x^2

$\Rightarrow x = \frac{10}{3}$

Click here for the next week’s Punch

Actions

Reply To This

Author: Sureshbala; Authority 787

Vote

Current Rating: 1; Rate Up; Rate Down

1 Vote

Rating: Positive 4 Negative 0

790 Views
26 Comments
Tags

CAT punch Practice

Also Shared In…

This work is public domain.

Advertisement

Person

Primary Navigation