Question

The average of first 19 multiples of 12 is
Select one
a. 220
b. 120
c. 110.5
d. 110​

Answer 1

126 I think there is no option of 126

Answer 2

The average of first 19 multiples of 12 is (B) 120.

Find Multiples of 12 :

⇒ First, 19 multiples of 12 are

$12(1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19)$

How to find average :

• Average This will be the arithmetic mean, which is derived by multiplying a collection of integers by the number of those values.

⇒ Sum of values

$(1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19)=190$

$12X190 = 2,280$

⇒ Average

⇒ $2,280 / 19$

⇒ 120

The average of the first 19 multiples of 12 is 120.