Question 18

If "-" stands for "÷", "+"stands for "x", "÷" for "-" and "x" for "+", which of the following equations is correct?

Solution

(A) : 40 - 10 + 5 ÷ 4 x 5 = 21

$$\equiv40\div10\times5-4+5=21$$

L.H.S. $$=(4\times5)+1=20+1=21=$$ R.H.S.

=> Ans - (A)

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