Question

express 49 as the sum of 7 odd numbers​

Answer 1

Answer:

Step-by-step explanation:

sum of first n odd natural numbers is n2

49 = (7)2

49 is the sum of first 7 odd natural numbers.

49 = 1 + 3 + 5 + 7 + 9 + 11 + 13

Answer 2

Answer:

1+3+5+7+9+11+13 = 7^2 = 49

Step-by-step explanation:

If we add consecutive natural odd numbers we get the square of the number of consecutive odd numbers we have added. In the above question, we added 7 consecutive natural odd numbers and we got the square of 7 as answer.Another example :-

1+3+5 = 3^2 = 9