Solution:

As we know

$micro = µ = 10^{-6}$
$nano = n = 10^{-9}$
$pico = p = 10^{-12}$

The relation between micro, nano and pico can be written as.

$micro = 10^{-6}$
$nano =  10^{-6} \times 10^{-3} = 10^{-6}$  micro
pico  =  $10^{-6} \times10^{-6} = 10^{-6}$   micro