In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives.
`{:(3,4,5),(4,5,3),(underline(4" "),underline("3 "),underline(?" ")),(underline(48),underline(60),underline(105)):}`

Options

A. 2
B. 6
C. 7
D. 9

Answer

C

Explanation

The product of three numbers in each column is equal to the lowermost number.
`3xx4xx4=48`
`5xx5xx3=60`
`5xx3xx?=105`
or, `?=(105)/(15)=7`