Question

Find the missing term in the series given below. 12,17,30,?,96,157
options
A.45
B.53
C.47
D.55
​

Answer 1

Answer:

47 is your perfect anwer

Answer 2

Given : 12,17,30,?,96,157

To find:  Missing terms  in the series

Solution:

12        17        30       55     96     157

     5         13        25       41       61

           8         12        16        20

                 4          4          4    

Hence missing number is 55

Tₙ₊₁ = Tₙ  + 1  + 4 ( ∑n)  where T₁ = 12

T₂ = 12 + 1 + 4  (1) = 17

T₃ = 17 + 1 + 4  (3) = 30

T₄ = 30 + 1 + 4  (6) = 55

T₅ = 55 + 1 + 4  (10) = 96

T₆ =96 + 1 + 4  (15) =157

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