Question

870,342,132,?,12,2 number series

I want the trick​

Answer 1

Hi friend here is your answer.

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Ans is 40.

In the sequence we have to sum the digits except the first one.

Example-- 02,12,?,132,342,870

2=2

1+2=3

4+0=4

3+2=5

4+2=6

7+0=7

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Answer 2

$870 = {29}^{2} + 29 \\ 342 = {18}^{2} + 18 \\ 132 = {11}^{2} + 11 \\ 42 = {6}^{2} + 6 \\ 12 = {3}^{2} + 3 \\ 1 = {1}^{2} + 1 \\ missing \: term \: is \: 42 \: \\ difference \: in \: terms \: are \\ \: prime \: number \: 29 - 18 = 11 \\ 18 - 11 = 7 \\ 11 - 6 = 5 \\ 6 - 3 = 3 \\ 3 - 1 = 2$