Question

find the value of this..

pls show the process​

Answer 1

FIRSTLY

SUM OF SQUARES OF FIRST 50 NUMBERS :

n(n+1)(2n+1)/6

=50(50+1)(100+1)/6

=50(51)(101)/6

=50×51/6×101

=42925.

then,

SUM OF SQUARES OF FIRST 5 NUMBERS:

=5(5+1)(10+1)/6

=5(6)(11)/6

=55.

SUM OF SQUARES OF NUMBERS FROM 6 TO 50:

=42925-55

=42879