Question

Pls help with proper steps....
The answer is 325 but I'm not getting it
Will mark as brainliest.....

Answer 1

1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25

in first row their is one tree in second row their are two trees and in third their are 3 trees so we have to add all the trees from row 1 to row 25 so we get answer 325