Question

71,?,868,4345,26076​

Answer 1

Your answer is here in this pic.....

Answer 2

Given:

A series of numbers 71,? 868, 4345, 26076​.

To Find:

The number which replaces the '?' in the series is?

Solution:

The given problem can be solved by developing a common logic between every term.

1. The given series is 71,? 868, 4345, 26076​.

2. The third term of the series is obtained as,

=>Third term =  Second term x 5 + 5,

=> Third term = 868 x 5 + 5 = 4345.

3. The fourth term of the series is obtained as,

=>Fourth term = Third term x 6 + 6,

=> Fourth term = 4345 x 6 + 6 = 26076.

4. The second term of the series can be obtained using similar logic,

=> Second term = First term x 3 + 3,

=> Second term = 71 x 3 + 3,

=> Second term = 216.

5. The third term of the series is obtained as,

=> Third term = Second term x 4 + 4,

=> Third term = 216 x 4 + 4,

=> Third term = 868.

6. Hence, the second number is 216, and it satisfies the logic used in the series.

Therefore, the second number in the series is 216.