Question

29. The next term in the following series is

1, 2, 5, 16, 65, 326, ?

(1) 1956 (2) 1957

(3) 1955 (4) 1987​

Answer 1

We see that,

1 = 0×0 +1

2 = 1 × 1 + 1

5 = 2 × 2 + 1

16 = 5 × 3 + 1

65 = 16 × 4 + 1

326 = 65 × 5 + 1

So, the next term is

= 326 × 6 + 1

= 1956 + 1

= 1957

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