Question 14

In the following question, by using which mathematical operator will the expression become correct?

18 ? 6 ? 9 ? 27

Solution

Expression : 18 ? 6 ? 9 ? 27

(A) : x, ÷ and =

=> $$18\times6\div9=27$$

L.H.S. = $$2\times6=12\neq$$ R.H.S.

(B) : ÷, x and =

=> $$18\div6\times9=27$$

L.H.S. = $$3\times9=27=$$ R.H.S.

(C) : x, + and =

=> $$18\times6+9=27$$

L.H.S. = $$108+9=117\neq$$ R.H.S.

(D) : +, - and =

=> $$18+6-9=27$$

L.H.S. = $$24-9=15\neq$$ R.H.S.

=> Ans - (B)


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