Question

help me need help maths ​

Answer 1

Answer:

First five multiple of 3 are :- 3, 6, 9, 12, 15.

Mean = (3 + 6 + 9 + 12 + 15)/5

Mean = 45/3 = 15 Ans.

Answer 2

first five multiple of 3

3,6,9,12,15

we know that

mean = sum of number /total number

so

3+6+9+12+15

3(1+2+3+4+5)

since n = 5

3*5(5+1)/2

3*5*3

45

total number = 5

mean = 45/5 = 9