Question

2,7,24,77,? find next number​

Answer 1

$\large\boxed { {Answer: 238}}$

Solution:

Multiply the previous number with three and add odd numbers continuing from one to the product to get the next number.

I.e,

$2 \times 3 + 1 = 7$

$7 \times 3 + 3 = 24$

$24 \times 3 + 5 = 77$

$77 \times 3 + 7 = 238$