Question

Sum of first five multuiples of 3 is. . .
(A) 45
(B) 55
(C) 15
(D) 75

Answer 1

First five multiples of 3
Are.......



03
+6
+9
+12
+15


=45

Answer 2

Answer:

(A) 45.

Step-by-step explanation:

In the question,

We have to calculate the sum of the first 5 multiples of 3.

So,

The first number is 3.

Therefore, The consecutive multiples of 3 are,

3, (3 + 3), (3 + 2(3)), (3 + 3(3)), (3 + 4(3)) = 3, 6, 9, 12, 15

So, the sum of these first 5 multiples of 3 is,

3 + 6 + 9 + 12 + 15 = 45

Therefore, the sum of the first 5 multiples of 3 is 45.

Hence, the correct option is (A).