Question

(1,3,5,7,9,11,13,15) inme se kisi 5 ko jodne pr 30 kaise aayege
----+---+----+----+----- = 30

Answer 1

Your Solution:

First Method :-

(15 - 9) + (13 - 7) + (7 - 1) + (9 - 1) + (13 - 9)

= 6 + 6 + 6 + 8 + 4

= 30

Second Method :-

Factorial of a non-negative integer is multiplication of all integers smaller than or equal to n. For example factorial of 3 [or 3!] is 3 × 2 × 1 = 6 and factorial of 6 [or 6!] is 6 × 5 × 4 × 3 × 2 × 1 = 720.

(3!) + (3!) + (3!) + (3!) + (3!)

= 6 + 6 + 6 + 6 + 6

= 30

There could be more methods to solve this riddle I just know only 2 methods and shared with you with my answers.

I hope you got it

Happy Learning :D