Question: Which of the following set is multiples of 3 between 9 to 21?

Answer:

a. {12, 15, 18}

b. {9, 12, 15}

c. {12, 15, 18, 21}

d. {9, 12, 15, 18, 21}​

Solution:

#Multiple of 3#

a1=3

a2=(3 x 2)=6

a3=(3 x 3)=9

a4=(3 x 4)=12

a5=(3 x 5)=15

a6=(3 x 6)=18

a7=(3 x 7)=21

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