1.

Find out to sign to be interchanged for making the questions correct 10 + 10 ÷ 1 - 10 × 10 = 10(A) + and - (B) + and × (C) ÷ and x (D) + and ÷

Answer»

(B) By making the interchanges given in (A), the equation as

10 - 10 ¯ 10 + 10 × 10 = 10 or 109 = 10 which is false

By making the interchanges given in (B), the equation as

10 × 10 ÷ 10 - 10 + 10 = 10 or 10 = 10 which is true

By making the interchanges given in (C), the equation as

10 + 10 × 10 - 10 ÷ 10 = 10 or 109 = 10 which is false

By making the interchanges given in (D), the equation as

10 ÷ 10 + 10 - 10 ÷ 10 = 10 or - 89 = 10 which is false



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