Question

4, 5, 11, 34, 137, __

Answer 1

Step-by-step explanation:

⇒ 4 × 1 + 1 = 5,

⇒ 5 × 2 + 1 = 11,

⇒ 11 × 3 + 1 = 34,

⇒ 34 × 4 + 1 = 137,

⇒ 137 × 5 + 1 = 686

Answer 2

Solution :-

Logic :- Previous number * Natural number in increasing order + 1 = Next number .

Explanation :-

→ 4 * 1 + 1 = 4 + 1 = 5

→ 5 * 2 + 1 = 10 + 1 = 11

→ 11 * 3 + 1 = 33 + 1 = 34

→ 34 * 4 + 1 = 136 + 1 = 137

so,

→ 137 * 5 + 1 = 685 + 1 = 686 (Ans.)

Hence, next number in the series will be 686 .

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