Question

use the property of square number to find the sum without adding 1 + 3 + 5 + 7 + 9 + 11+13​

Answer 1

Step-by-step explanation:

sum of n odd numbers is equal to n^2

sum of 7 odd numbers is equal to 7^2

49

I hope it will helpful to you

Answer 2

Step -by-step explanation:

first we will se how much digit is given :-

it is 7 .

now we will find the square of 7

it is 7² :- 49

Answer:-

49