find the sum of first 20 positive integers divisible by 5 and ,6
And no links plz

Question

find the sum of first 20 positive integers divisible by 5 and
,6
And no links plz

Varun.Rawat · Accepted Answer

The list of positive integers that are divisible by 5 and 6 is :30, 60, 90, 
The above list forms an AP with first term, a = 30 and ommon difference, d = 30Now, sum of first n terms of an AP is      Sn = n22a + n-1d⇒S20 = 2022×30 + 20-1×30⇒S20 = 1060 + 570⇒S20 = 10 ×630⇒S20 = 6300So, sum of first 20 positive integers that are divisible by 5 and 6 is 6300

find the sum of first 20 positive integers divisible by 5 and ,6 And no links plz

find the sum of first 20 positive integers divisible by 5 and ,6
And no links plz