Question

,2,3,4,5,??? find the missing number. 1,11,21,1211,111221,---?

Answer 1

Solution :
As per the given pattern, it can be observed that,
(i) The third number is the multiplication of the first two numbers
(ii) The fourth number can be obtained by adding 1 to the third number
Hence, the missing numbers in the pattern will be:
42 + 52 +202 = 212
52 +62 + 302 = 312
62 + 72 +422 =432