# General Studies: Important for Exam: Mathematical Aptitude Part 3

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Q. Find out an odd number —

835, 734, 642, 751, 853,981, 532

(A) 751

(B) 853

(C) 981

(D) 532

Ans: (A)

Q.

(A)

(B)

(C)

(D)

Ans: (D)

Q. Average of 50 numbers is 30. If two numbers 35 and 40 are deleted, what would be the average of rest numbers?

(A)

(B)

(C)

(D)

Ans: (D)

Q. Which of the following is odd?

– 3, 9, 21, 34,45, 57

(A) 34

(B) 57

(C) 21

(D) – 3

Ans: (A)

Q. L. C. M. of two numbers is 4284 and their H. C. F. is 34. One of these two numbers is 204, then what is second number?

(A) 714

(B) 720

(C) 700

(D) 715

Ans: (A)