Question 33

2, 5, 12, 27, 58, ?

Solution

Each number is multiplied by 2 and then consecutive natural numbers are added

2 $$\times 2 + 1$$ = 5

5 $$\times 2 + 2$$ = 12

12 $$\times 2 + 3$$ = 27

27 $$\times 2 + 4$$ = 58

58 $$\times 2 + 5$$ = 121

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