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Option 4 : 67 – 76 + 43 = 100
Interchanging ‘ + ’ and ‘-‘ and ‘6’ and ‘7’,
Option 1 :
72 + 76 – 67 = 83
148 – 67 = 83
81 is not equal to 83
Option 2 :
68 + 78 - 77 = 59
146 – 77 = 59
69 is not equal to 59
Option 3:
67 + 65 - 66 = 57
132 – 66 = 57
66 is not equal to 57
Option 4:
76 + 67 - 43 = 100
143 – 43 = 100
100 = 100
Hence, option 4 is the correct answer.
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