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Question : Directions: After interchanging the given two signs what will be the values of equations (I) and (II) respectively?
× and +
I. 5 × 12 – 15 + 20 ÷ 25
II. 36 + 3 × 2 – 15 ÷ 5

Option 1: 17 and 35

Option 2: 50 and 55

Option 3: 5 and 107

Option 4: 10 and 100


Team Careers360 7th Jan, 2024
Answer (1)
Team Careers360 21st Jan, 2024

Correct Answer: 5 and 107


Solution : Given:
I. 5 × 12 – 15 + 20 ÷ 25
II. 36 + 3 × 2 – 15 ÷ 5

Equation I: 5 × 12 – 15 + 20 ÷ 25
On interchanging the mathematical signs, we get –
= 5 + 12 – 15 × 20 ÷ 25
= 5 + 12 – 12
= 17 – 12
= 5
Equation II: 36 + 3 × 2 – 15 ÷ 5
On interchanging the mathematical signs, we get –
= 36 × 3 + 2 – 15 ÷ 5
= 36 × 3 + 2 – 3
= 108 + 2 – 3
= 110 – 3
= 107

So, the values of equations (I) and (II) are 5 and 107. Hence, the third option is correct.

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