Question

Find the sum of
(i) the first 15 multiples of 8
(ii) the first 40 positive integers divisible by (a) 3 (b) 5 (c) 6.
(iii) all 3-digit natural numbers, which are divisible by 13.
(iv) all 3-digit natural numbers, which are multiples of 11.
(v) all 2-digit natural numbers divisible by 4.

Answer 1

(i) 960
(ii) (a) 2460 (b) 4100 (c) 4920
(iii) 37674
(iv)44550
(v) 1188