Question

5) Sum of first five multiple of 3 is ....
(8) 55
(A) 45
(C) 15
(D) 75​

Answer 1

Answer:

Sum of Five first multiple of 3 is 15

Answer 2

$\clubs \ \: 3 \times 1 + 3 \times 2 + 3 \times 3 + 3 \times 4 + 3 \times 5$

$\clubs \: 3 + 6 + 9 + 12 + 15$

$\clubs \: 9 + 9 + 12 + 15$

$\clubs \: 18 + 12 + 15$

$\clubs \: 30 + 15$

$\clubs \: \bf45 \: ...$