Question

What number is X in this series: 101, 103, X, 115, 131?

Answer 1

Answer:

109

Step-by-step explanation:

Answer 2

Given : 101, 103, X, 115, 131?

To Find : Value of X

Solution:

101

101  + 2¹  = 103

103 + 2²  = 107

107 + 2³ = 115

115 + 2⁴  = 131

Tₙ₊₁  = Tₙ + 2ⁿ   where T₁ = 101

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