CAT DILR Questions | CAT Data Sufficiency questions

Comprehension

Directions for Questions: These questions are based on the information given below.

In each question, you are given certain data followed by two statements, for answering the question

Mark (a) , if the question can be ansered with the help of one of the statements, but not with the help of the other statement.

Mark (b), if the question can be answered with the help of either of the statements alone.

Mark (c), if the question can be answered only with the help of both the statements

Mark (d), if the question can not be answered even with the help of both the statements together

CAT/1999

Question . 64

What is the number of students in the class if the average weight of the students is 50 kg

I. The heaviest & lightest students in the class weigh 60 & 40 kg respectively

II. If the heaviest & the lightest students are taken away from the group the average weight remains the same

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Explanatory Answer

Method of solving this CAT DILR Question from Data Sufficiency question

(d) Statement 1 doesn’t give us anything towards the number of students. Statement two also can’t oblige as it itself is an inference from the data already encountered.