Question : Solve the following equation.
123 × (162 − 142 − 40) ÷ 2 − 94 = ________.
Option 1: 17280
Option 2: 6561
Option 3: 10719
Option 4: 9865
Correct Answer: 10719
Solution :
12
3
× (16
2
− 14
2
− 40) ÷ 2 − 9
4
=
1728 × (256 − 196 − 40) ÷ 2 − 6561
=
1728 × 20 ÷ 2 − 6561
=
1728 × 10 − 6561
=
17280 − 6561
= 10719
Hence, the correct answer is 10719.
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