Question : Direction: Correct the following equation by interchanging the two signs and two numbers.
7 × 6 + 5 – 4 = 33
Option 1: –, × and 4, 5
Option 2: ×, + and 4, 5
Option 3: +, – and 5, 6
Option 4: ×, – and 5, 6
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Correct Answer: +, – and 5, 6
Solution :
Given:
7 × 6 + 5 – 4 = 33
Let's check from the options –
First option:
–, × and 4, 5
⇒ 7 – 6 + 4 × 5 = 33
= 7 – 6 + 20
= 21 ≠ 33
Second option:
×, + and 4, 5
⇒ 7 + 6 × 4 – 5 = 33
= 7 + 24 – 5
= 26 ≠ 33
Third option:
+, – and 5, 6
⇒ 7 × 5 – 6 + 4 = 33
= 35 – 6 + 4
= 33
Fourth option:
×, – and 5, 6
⇒ 7 – 5 + 6 × 4 = 33
= 7 – 5 + 24
= 26 ≠ 33
So, from the above, only the third option satisfies the given equation. Hence, the third option is correct.
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