Question

without adding, find the sum :1+3+5+7+.....+23​

Answer 1

Answer:

the correct answer for this question is 16

Step-by-step explanation:

1+3+5+7=16

which gives 26

I hope the answer was helpful

Answer 2

Step-by-step explanation:

1+3 =4 =2²

1+3+5 =9 =3²

Hence its a pattern

Sum of first n odd natural number = n²

1,3,5....23 means it has 12 terms.

Sum is 12² =144