Question

If the geometric mean between 1/9 and m is 2, then find the value of m.​

Answer 1

Letmeansareaandb

then1,a,b,64areinGP

∴64=1×r

2

∴r=4

thena=1×r=4

b=1×r

2

=16.

So, the correct option is '4 and 16'