The pattern followed is that both the numbers are multiplied and then one more than the sum of numbers is subtracted from the result.
Eg : $$(13\times9)-(13+9+1)=117-23=94$$
and $$(18\times7)-(18+7+1)=126-26=100$$
Similarly, $$(24\times6)-(24+6+1)=144-31=113$$
=> Ans - (B)
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