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Option 3 : 6 + 5 × 2 – 3 = 7
3 and 5 interchange then,
1) 5 + 3 – 4 × 2 = -1
5 + 3 – 8 = -1
8 – 8 = -1
0 = -1.
2) 1 + 9 ÷ 5 + 3 = 9
1 + 1.8 + 3 = 9
5.8 = 9
3) 6 + 3 × 2 – 5 = 7
6 + 6 – 5 = 7
12 – 5 = 7
7 = 7.
4) 3 + 4 – 1 × 5 = 2
5 + 4 - 1 × 3 = 2
5 + 4 - 3 = 2
9 - 3 = 2
6 = 2 (not equal)
So, option 3 is true hence no need to check 4th option.
Thus, the correct answer is “6 + 5 × 2 – 3 = 7”.
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