Question

without adding find the sum 1+2+3+4+5+6+7+8+9+10+11

Answer 1

Hey friend, ☺️here is your answer ____________________________

We have to find the sum of 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 without adding.

So let's start
Total terms = 11
Total odd terms = 6 (1, 3, 5, 7, 9, 11)

Addition = total terms × total odd terms = 11 × 6 = 66

Hope this helps you...