Data Sufficiency Practice Question for IBPS, Bank, SBI PO and Various Govt Exam, CAT, GMAT

Question 7 : John is writing out an arithmetic sequence. How many terms does he need to write out before he writes a term greater than or equal to 1,000?

Statement 1: The fourth term is 50.

Statement 2: The twentieth term is 418.

Options:

A) BOTH statements TOGETHER are insufficient to answer the question.

B) BOTH statements TOGETHER are sufficient to answer the question, but NEITHER statement ALONE is sufficient to answer the question.

C) Statement 2 ALONE is sufficient to answer the question, but Statement 1 ALONE is NOT sufficient to answer the question.

D) EITHER statement ALONE is sufficient to answer the question.

Question 8: How is T related to K?

Statements:

R’s sister J has married Ts brother L, who is the only son of his parents.
K is the only daughter of L and J.

A. I alone is sufficient while II alone is not sufficient
B. II alone is sufficient while I alone is not sufficient
C. Either I or II is sufficient
D. Neither I nor II is sufficient
E. Both I and II are sufficient

Answer: Option E

Explanation:

From I, we know that L is T’s brother and J’s husband. Since L is the only son of his parents, T is L’s sister.

From II, we know that K is L’s daughter.

Thus, from I and II, we conclude that T is the sister of K’s father i.e. T is K’s aunt.

Question 9:In which year was Rahul born ?

I. Rahul at present is 25 years younger to his mother.

II. Rahul’s brother, who was born in 1964, is 35 years younger to his mother.

A) If the data in statement I alone are sufficient to answer the question
B) If the data in statement II alone are sufficient answer the question
C) If the data either in I or II alone are sufficient to answer the question;
D) If the data in both the statements together are

Answer: D) If the data in both the statements together are needed.

Explanation:

From both the given statements, we find that Rahul is (35 – 25) = 10 years older than his brother,

who was born in 1964, So. Rahul was horn in 1954

Thus, both the given statements are needed to answer the query.

Question 10 : At what time did Sonali leave her home for office?

I. Sonali received a phone call at 9:15 a.m. at her home.

II. Sonali’s car reached office at 10:15 a.m. 45 minutes after she left her residence.

A) If the data in statement I alone are sufficient to answer the question
B) If the data in statement II alone are sufficient answer the question

C) If the data either in I or II alone are sufficient to answer the question;
D) If the data even in both the statements together are not sufficient to answer the question

Answer: B) If the data in statement II alone are sufficient answer the question

Explanation:

From statement II, we conclude that Sonali left her home 45 minutes before 10.15 a.m. i.e, 9.30 a.m.

Thus, only Ills needed