`{:(3,6,7),(9,18,21),(27,54,?),(81,162,189):}`

Options

A. 22
B. 63
C. 190
D. 55

Answer

B

Explanation

`3 xx 3 = 9, 9 xx 3 = 27, 27 xx 3 =81`
`6 xx 3 = 18, 18 xx 3 = 54, 54 xx 3 = 162`
`7 xx 3 = 21, 21 xx 3 = 63, 63 xx 3= 189`