IBPS Government Jobs Exams Numerical Ability Number System

The average of five numbers is 56. If the average of first four numbers is 54, what is the value of the fifth number?
(A) 68
(B) 72
(C) 56
(D) 64
(E) None of these

Read Solution (Total 1)

The average of five numbers is 56
56*5=280
average of first four numbers is 54
54*4=216
fifth number is obtained by subtracting above results 280-216=64

so option is D) 64
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IBPS Other Question

15 21 33 51 75 (?)
(A) 113
(B) 103
(C) 105
(D) 115
(E) None of these If a number is added to seven-ninth of thirty five percent of 900, the value so obtained as 325. What is the number?
(A) 60
(B) 120
(C) 90
(D) 180
(E) None of these