Question

a) 1+2+3+4+. . .+20 = 20(20+1) = × = .............

2 2



b) 2+4+6+ . . . +50 = 25 ×(25+1) =



c) 1+3+5+ . . . +29 = 152 =​

Answer 1

Answer:

I think mark as brainlist