Question

Insert three arithmetic means between 3 and 19.

Answer 1

SOLUTION

Let A1, A2 & A3 be three A.M's. between 3& 19.

Then,3, A1, A2, A3 ,19 will be in A.P

Here,

Total number of terms = 5

a= 3

3 +4d= 19

=) 4d= 19-3

=) 4d=16

=) d= 16/4

=) d= 4

A1= a+d= 3+4 = 7

A2=a+2d= 3+ 8= 11

A3= a+ 3d= 3+ 12= 15

hope it helps ☺️

Answer 2

Answer:

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