Find the sum of first 15 even numbers?
Soln Date / Update:-21-Jul-2025 08:05AM
Solution:-
Find the sum of first 15 even numbers?
(A) 110 (B) 420
(C) 204 (D) 240
Soln:-
Formula,
when n is odd no. = n ( n + 1 )
when n is even no. = n ( n + 2 ) / 4
Here, n is odd no
= n ( n + 1 )
= 15 ( 15 + 1 )
= 15 * 16
= 240 Ans.
