MCQ

Mathematical operations MCQ - Practice Questions with Answers

Solve 1 Mathematical operations questions for RAS/RPSC preparation.

Practice questions

Q1Which two signs should be interchanged in the following equation to make it correct? 20 + 5 ÷ 20 × 8 - 20 = 38

A + and ×

B - and +

C ÷ and ×

D - and ÷

Explanation

Interchanging the minus sign and the plus sign changes the expression to 20 - 5 ÷ 20 × 8 + 20. By the usual order of operations, division and multiplication are handled first from left to right: 5 ÷ 20 × 8 = 2. The expression then becomes 20 - 2 + 20 = 38, which is correct. Interchanging plus with multiplication, division with multiplication, or minus with division does not produce the required value 38.

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