In each of the following questons , which one of the four interchanges in signs and numbers would make the given equation correct /true ?
` (9xx 3) - 4 =12`

Options

A. `- and xx , 3 and 4`
B. `- ` to `div, 3 and 9`
C. `xx` to `div, 4 and 9`
D. `-` to` div, 3 and 4`

Answer

D

Explanation

Changing .-. and .+. and Interchanging 3 and 4 in the given equation, we get `( 9 xx 4) div 3 =12 `
Using BODMAS RULE, we get
`36 + 3 =12`
or 12 = 12, which is correct