Basic Data Sufficiency Test Series-15

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Sureshbala’s Tests

A test by Suresh.

Test Questions

Question

If x, y, and z are positive, what is the value of x ? (1) x + y = z + y (2) z – y = 4 – y

Answers

Correct	Answer Text
	Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked.
	Each statement alone is sufficient to answer the question.
	Statements 1 and 2 are not sufficient to answer the question asked and additional data is needed to answer the statements.
	Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question asked.
	Both statements 1 and 2 together are sufficient to answer the question but neither statement is sufficient alone.

Question

Is x/8 = 3/4 (1) x > 5.5 (2) x < 7

Answers

Correct	Answer Text
	Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked.
	Statements 1 and 2 are not sufficient to answer the question asked and additional data is needed to answer the statements.
	Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question asked.
	Each statement alone is sufficient to answer the question.
	Both statements 1 and 2 together are sufficient to answer the question but neither statement is sufficient alone.

Question

Mouse population X doubles every week. How many weeks from now will population X first exceed 1,000,000 ? (1) The mouse population is now 65,536. (2) Fifteen weeks ago the mouse population was 2.

Answers

Correct	Answer Text
	Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question asked.
	Statements 1 and 2 are not sufficient to answer the question asked and additional data is needed to answer the statements.
	Each statement alone is sufficient to answer the question.
	Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked.
	Both statements 1 and 2 together are sufficient to answer the question but neither statement is sufficient alone.

Question

If no student took test T more than once, how many students took test T ? (1) The average (arithmetic mean) of the students' scores on test T was 72. (2) The sum of he students' scores on test T was 2,232.

Answers

Correct	Answer Text
	Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question asked.
	Statements 1 and 2 are not sufficient to answer the question asked and additional data is needed to answer the statements.
	Both statements 1 and 2 together are sufficient to answer the question but neither statement is sufficient alone.
	Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked.
	Each statement alone is sufficient to answer the question.

Question

Last year 4/5 of the applicants for a job on a police force passed the physical xamination. If 3/4 of the applicants who passed the physical examination also passed the written examination, how many of the applicants passed both examinations ? (1) The number of applicants who did not pass either examination was equal to the number who passed the written examination only. (2) There was a total of 100 applicants.

Answers

Correct	Answer Text
	Both statements 1 and 2 together are sufficient to answer the question but neither statement is sufficient alone.
	Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question asked.
	Each statement alone is sufficient to answer the question.
	Statements 1 and 2 are not sufficient to answer the question asked and additional data is needed to answer the statements.
	Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked.

Question

Kelly's raise increased his salary by what percent ? (1) Kelly's raise was $1,200. (2) Kelly's raise increased his taxes to $1,700.

Answers

Correct	Answer Text
	Each statement alone is sufficient to answer the question.
	Both statements 1 and 2 together are sufficient to answer the question but neither statement is sufficient alone.
	Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question asked.
	Statements 1 and 2 are not sufficient to answer the question asked and additional data is needed to answer the statements.
	Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked.

Question

Is the integer n even ? (1) n^2 - 1

is odd. (2) $\sqrt {n}$ is an integer.

Answers

Correct	Answer Text
	Statements 1 and 2 are not sufficient to answer the question asked and additional data is needed to answer the statements.
	Both statements 1 and 2 together are sufficient to answer the question but neither statement is sufficient alone.
	Each statement alone is sufficient to answer the question.
	Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked.
	Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question asked.

Question

If today is Carol's birthday, how old is Carol? (1) 6 years ago she was half her present age. (2) 3 years from now she will be 3 times as old as she was 7 years ago.

Answers

Correct	Answer Text
	Each statement alone is sufficient to answer the question.
	Both statements 1 and 2 together are sufficient to answer the question but neither statement is sufficient alone.
	Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked.
	Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question asked.
	Statements 1 and 2 are not sufficient to answer the question asked and additional data is needed to answer the statements.

Question

if * denotes an operation, what is the value of (a * b) * c ? (1) a * b = 5 (2) 5 * c = 3

Answers

Correct	Answer Text
	Both statements 1 and 2 together are sufficient to answer the question but neither statement is sufficient alone.
	Statements 1 and 2 are not sufficient to answer the question asked and additional data is needed to answer the statements.
	Each statement alone is sufficient to answer the question.
	Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked.
	Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question asked.

Question

If x + 2y = 6, what is the value of x ? (1) 2x + y = 9 (2) 3x + 2y = 14

Answers

Correct	Answer Text
	Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked.
	Each statement alone is sufficient to answer the question.
	Both statements 1 and 2 together are sufficient to answer the question but neither statement is sufficient alone.
	Statements 1 and 2 are not sufficient to answer the question asked and additional data is needed to answer the statements.
	Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question asked.