Question

without adding find the sum of .. question is mentioned above
​

Answer 1

Answer:

Your handwriting is osm..

Answer 2

|| ✰✰ ANSWER ✰✰ ||

Sum of first n odd numbers = n²

upto 45 total = 45+1/2 = 23

total sum = 23² = 529

now sum of upto 21 = 11² = 121

Answer = 529 - 121 = 408

✪✪ Hence Answered ✪✪

Hope it help u mark as brainliest please