Question 42

Find the missing number in the following series.
5, 69, 101, (…), 125, 129

Solution

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5 + $$2^{6}$$ = 69 

69 +  $$2^{5}$$ = 101

101 +  $$2^{4}$$ = 117

117 + $$2^{3}$$ = 125

125 + $$2^{2}$$ = 129 

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