6, 7, 5, 3 and 7
to make 4315
You have five minutes to get as close to 4315 as possible using any mathematical operations you know.
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One possible solution is 56 x 77 + 3 = 4315
Are there any others?
What strategies did you use?
Did you use your head, paper or a calculator?
Or did you use all three?
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