Question

Find the sum of whole no that are less than 100 and leave remainder 2 when divided by 5

Answer 1

Answer:

990

Step-by-step explanation:

so first no is 2 as remainder is 2 after we divide 2 by 5

continuing we get 7, 12, 17 till 97

so now we use AP formula for constituting the sum.

no of terms is 20 as 95/5 =19

Also we add 2 as first term

so 19+1=20 terms in total.

formula is S=n/2[2a+(n-1)d]

where a=2, d=5, n=20

so put values to get result as 990