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Question : Directions: By interchanging the given two signs ÷ and –, which of the following equations will be correct?
I. 143 + 6 × 18 ÷ 45 – 3 = 236
II. 133 – 7 + 16 × 11 ÷ 37 = 158

Option 1: Both I and II

Option 2: Only I

Option 3: Only II

Option 4: Neither I nor II


Team Careers360 4th Jan, 2024
Answer (1)
Team Careers360 15th Jan, 2024

Correct Answer: Both I and II


Solution : Given:
I. 143 + 6 × 18 ÷ 45 – 3 = 236
II. 133 – 7 + 16 × 11 ÷ 37 = 158

Equation I. 143 + 6 × 18 ÷ 45 – 3 = 236
On interchanging the mathematical signs, we get –
= 143 + 6 × 18 – 45 ÷ 3
= 143 + 6 × 18 – 15
= 143 + 108 – 15
= 236
Equation II. 133 – 7 + 16 × 11 ÷ 37 = 158
On interchanging the mathematical signs, we get –
= 133 ÷ 7 + 16 × 11 – 37
= 19 + 16 × 11 – 37
= 19 + 176 – 37
= 158

So, both I and II are correct. Hence, the first option is correct.

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