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Question 3
Choose the group of mathematical signs from the given options that may replace the sign ‘ *’ in the following equation--
7 * 7 * 2 * 1 = 12
Solution
12 can be written as 7 + 7 - 2 x 1.
So, the answer is + - x which is option (b).
In all other options, the equation doesn't match.
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