Question 40

If 82 = 3, 1418 = -2 and 182 = 8, then find the value of 1410 = ?

Solution

Given : 8*2 = 3, 14*18 = -2 and 18*2 = 8

If we replace '*' with '-', and divide the difference by 2, we get the desired result.

Eg :- $$\frac{8-2}{2}=3$$

and $$\frac{14-18}{2}=-2$$ and $$\frac{18-2}{2}=8$$

Similarly, $$\frac{14-10}{2}=2$$

=> Ans - (A)

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If 8*2 = 3, 14*18 = -2 and 18*2 = 8, then find the value of 14*10 = ?