Question

without actual addition, find the sum of the following (a) 1+3+5+7+9 ​

Answer 1

Answer:

1+3+5+7+9

5 numbers are there

(5)²= 25

Step-by-step explanation:

First you have to count number (i.e.,1+3+5+7+9 ) after that how many numbers they are 5 no. then now take out square of that number (5)²=25