Given that 1 + 2 + 3 + .... x = x(x + 1)then 1 + 3 + 5 +

Given that 1 + 2 + 3 + .... x = x(x + 1) then 1 + 3 + 5 + ..... + 99 is equal to
2

Given that ,

1 + 2 + 3 + ............. + x =	x(x + 1)
	2

∴ 1 + 3 + 5 + ............. + 99 = ( 1 + 2 + 3 + 4 + 5 +.....100) – ( 2 + 4 + 6 +.....100)

Required answer =	100 × (100 + 1)	-	50 × (50 + 1)
	2		2

Hence , Required answer = 5050 – 1275 = 3775

Given that 1 + 2 + 3 + .... x =	x(x + 1)	then 1 + 3 + 5 + ..... + 99 is equal to
	2