In each of the following questions select the missing number front the given responses`{:(4,3,2),(6,9,10),(9,27,?):}`

Options

A. 54
B. 30
C. 20
D. 50

Answer

D

Explanation

`sqrt("First number" xx"third number")` = Second number in each column
First Column
`sqrt(4xx9)=sqrt(36)=6`
Second Column
`sqrt(3xx27)=sqrt(81)=9`
Third Column
`sqrt(2xx?)=10`
`rArr2xx?=100`
`:.?=(100)/(2)=50`