Find the missing number -3, 5, 13, 43, 177, ??, 5353

Question

Find out the missing number

2    3    1    2
3    4    4    5
5    6    6    7
30  43   51    ?

Answer 1

here

3 * 1 + 2 =3+1= 5
5 *2 + 3 =10+3= 13
13 * 3 + 4 = 39+4=43
43 *4 + 5 =172+5= 177
So, we will have....
177 * 5 + 6 =885+6= 891

and further, 891*6+7=5346+75353.

so answer will be = 891.