Data Sufficiency - Study Mode

[#61] Question : How is Divya related to Shaloo ? Statements : I. Divya's mother is sister of Shaloo's father. II. Shaloo is the daughter of Divya's grandfather's only child.
Correct Answer

(C) Either I or II is sufficient

Explanation

Solution: From I, we conclude that Divya's mother is Shaloo's aunt or Divya is Shaloo's cousin. Now, Divya's grandfather's only child is Divya's parent. So, from II, we conclude that Shaloo and Divya are daughters of the same parents i.e. Divya is Shaloo's sister.

[#62] Question : How many New Year's greeting cards were sold this year in your shop ? Statements : I. Last year 2935 cards were sold. II. The number of cards sold this year was 1.2 times that of last year.
Correct Answer

I alone is sufficient while II alone is not sufficient

Explanation

Solution: From both I and II, we find that the number of cards sold this year = (2935 x 1.2) = 3522.

[#63] Question : On which day in April is Gautam's birthday? Statements : I. Gautam was born exactly 28 years after his mother was born. II. His mother will be 55 years 4 months and 5 days on August 18 this year.
Correct Answer

I alone is sufficient while II alone is not sufficient

Explanation

Solution: Clearly, the birthday of Gautam's mother can be found out from II and then Gautam's birthday can be determined using the fact given in I.

[#64] Question : What is the code for 'is' in the code language ? Statements : I. In the code language, 'shi tu ke' means 'pen is blue'. II. In the same code language, 'ke si re' means 'this is wonderful'.
Correct Answer

I alone is sufficient while II alone is not sufficient

Explanation

Solution: In I and II, the common word is 'is' and the common code word is 'ke'. So, 'ke' is the code for 'is'.

[#65] Question : Among A, B, C, D and E, who is in the middle while standing in a row ? Statements : I. C, who is third to the left of D, is to the immediate right of A and second to the left of E. II. C is second to the left of E, who is not at any of the ends and who is third to the right of A. D is at one of the ends.
Correct Answer

(C) Either I or II is sufficient

Explanation

Solution: From each one of I and II, we get the order : A, C, B, E, D. Clearly, B is in the middle.