`{:(81,625,2401),(3,5,7),(27,125,?),(105,745,2737):}`

Options

A. 287
B. 336
C. 385
D. 343

Answer

D

Explanation

In each column the first number is the product of the second and the third numbers.
The lowermost number in each column can be obtained by subtracting the second number from the sum of the first and the third numbers
First Column
`3xx27=81`
`81+27-3=105`
Second Column
`5xx125=325`
`625+12-5=745`
Third Column
`7xx?=2401`
`:. ?=(2401)/(7)=343`
Again,
`2401+?-?=2737`
`:.2737+7-2401`
`rArr?=2744-2401=343`