Question # There are four arithmetic means between 2 and -18 . Find the

# There are four arithmetic means between 2 and -18 . Find the

means.

(a) -2,-6,-10,-14

(b) -3,-6,-9,-12

(c) -2,-4,-6,-8

(d) -4,-8,-12,-16

Solution

( 2, A_{1} j A_{2}, A_{3}, A_{4},-18 )

( -18=2+5 d Rightarrow d=-20 / 5=-4 )

( A_{1}=2-4=-2,1,2=2-8=-6 )

( A_{3}=2-12=-10, A_{4}=2-16=-14 )

Ans: option ( (a) )