Question

Without adding find the sum 1+3+5+7+9+11+13+.....15

Answer 1

Answer:

These are Odd Numbers

8 Odd Numbers are Here

Sum of Odd Numbers is N × N = N²

N = 8

N² = 8² = 64

Sum of 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 ( Sum of First N Odd Numbers )

First 8 Odd Numbers = 8 ² = 64

Step-by-step explanation:

Sum of N Natural Numbers

N ( N + 1 ) / 2

Sum of N Even Numbers

N ( N + 1 )

Sum of N Odd Numbers

N × N = N ²

Hope this Answer helps you to the Gain Knowledge in Maths Sum of Numbers