# 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)