Question

Find the missing number.

$?˸5\colon\colon 36˸15$

Answer 1

Given:

$?˸5\colon\colon 36˸15$

Here one extreme is missing

$\mathrm{One}\mathrm{extreme}=\frac{\mathrm{Product}\mathrm{of}\mathrm{means}}{\mathrm{other}\mathrm{extreme}}$

$=\frac{5\times 36}{15}$

$=12$

Hence, the missing number is $12$.