Practice MCQ Questions and Answer on Data Sufficiency

91. Question :

What does '$' mean in a code language?

Statements :
I. '5$#3' means 'flowers are really good'.
II. '7#35' means 'good flowers are available'.

• (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

Show Answer

Answer & Solution Answer: Option E Solution: In I and II, the common codes are '5', '#' and '3' and the common words are 'flowers', 'are' and 'good'. Thus, in I, the remaining code '$' stands for 'really'.

92. Question :

What is the numerical code for 'water' in a certain code ?

Statements :
I. The code for 'give me water' is '719'.
II. The code for 'you can bring water for me' is written as '574186'.

• (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

Show Answer

 In I and II, the common words are 'me' and 'water' and the common code numbers are '7' and '1'. So, the code for 'water' is either '7' or '1'.

93. Question :

How much money do Vivek and Suman have together ?

Statements :
I. Suman has 20 rupees less than what Tarun has.
II. Vivek has 30 rupees more than what Tarun has.

• (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

Show Answer

 From I, we have: S = T - 20. From II, we have: V = T + 30. Thus, from both I and II, we have: V + S = (T + 30) + (T - 20) = (2 T + 10). So, to get the required amount, we need to know the amount that Tarun has.

94. Question :

How many doctors are practising in this town ?

Statements :
I. There is one doctor per seven hundred residents.
II. There are 16 wards with each ward having as many doctors as the number of wards.

• (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

Show Answer

 From I, total number of doctors in town = (1/700 x N) , where N = total number of residents in town. But, the value of N is not known. From II, total number of doctors in town = (Number of wards in town) x (Number of doctors in each ward) = 16 x 16 = 256.

95. Question :

What is the code for 'sky' in the code language ?

Statements :
I. In the code language, 'sky is clear' is written as 'de ra fa'.
II. In the same code language, 'make it clear' is written as 'de ga jo'.

• (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

Show Answer

 The only word common to I and II is 'clear' and as such, only the code for 'clear' can be ascertained from the given information.