If 19!3 = 32, 13!4 = 18 and 12!2 = 20, then find the value of 17!3 = ?
Given : 19!3 = 32, 13!4 = 18 and 12!2 = 20
If we replace '!' with '-', and multiply the difference by 2, we get the desired result.
Eg :- $$(19-3)\times2=31$$
and $$(13-4)\times2=18$$ and $$(12-2)\times2=20$$
Similarly, $$(17-3)\times2=28$$
=> Ans - (B)
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