Question 29

By interchanging which two signs the equation will be correct?
25 + 18 ÷ 2 - 4 = 20

Solution

Expression : 25 + 18 ÷ 2 - 4 = 20

(A) : + and ÷

$$\equiv25\div18+2-4=20$$

L.H.S. = $$1.39-2=-0.61\neq20$$

(B) : + and -

$$\equiv25-18\div2+4=20$$

L.H.S. = $$25-9+4=20$$

=> Ans - (B)

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