`2 xx 3 = 49, 5 xx 6 = 2536, 1 xx 9 = 181, 4 xx 7 = ?`

Options

A. 1628
B. 1649
C. 2549
D. 1219

Answer

B

Explanation

`{:(" "2," "xx," "3),(xx2darr,,xx3darr),(" "4,," "9):}`
`{:(" "5," "xx," "6),(xx5darr,,xx6darr),(" "25,," "36):}`
`{:(" "1," "xx," "9),(xx1darr,,xx9darr),(" "1,," "81):}`
`{:(" "4," "xx," "7),(xx4darr,,xx7darr),(" "16,," "49):}`