Question

what is the sum of multiples of 7 from 100 to 500​

Answer 1

Answer:

sum is equal to 17157

Step-by-step explanation:

a=105

l=497

n=57

$s = n \div 2(a + l)$

=57÷2(105+497)

=57÷2*602

=17157

there fore sum is equal to 17157