IBPS Government Jobs Exams Logical Reasoning Number Series

15 21 33 51 75 (?)
(A) 113
(B) 103
(C) 105
(D) 115
(E) None of these

Read Solution (Total 1)

15+6 =21
21+12=33
33+18=51
51+24=75
75+30=105
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IBPS Other Question

4 11 25 53 109 (?)
(A) 221
(B) 234
(C) 121
(D) 222
(E) None of these 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