MENU
Question -

The 5th, 8th and 11th terms ofa G.P. are p, q and s, respectively.Show that q2 = ps.



Answer -

Let’s take a tobe the first term and r to be the common ratio of the G.P.

Then according to thequestion, we have

a5 = a r5–1 = a r4 = p …(i)

a8 = a r8–1 = a r7 = q …(ii)

a11 = a r11–1 = a r10 = s …(iii)

Dividing equation (ii)by (i), we get

Comment(S)

Show all Coment

Leave a Comment

Free - Previous Years Question Papers
Any questions? Ask us!
×