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It depends on what operations you are allowed to use, but if repeating decimals are allowed it is easy. I can't type a dot or bar over a digit to indicate a repeating decimal here, so I'll type .2r for .222222..., which is equal to 2/9. Thus 2/.2r is 9, so 2/.2r - 2 is 7, as required.
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Earn +20 ptsQ: How do you make seven with three twos?
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How many twos make 60?
To find out how many twos make 60, you need to divide 60 by 2. This division results in 30, which means that there are 30 twos in 60. In mathematical terms, this can be expressed as 60 ÷ 2 = 30.
How many numbers can you write using three twos and no other symbols?
three.. 2, 22, 222
How many different ways are there to add prime numbers to make a total of 25?
23 + 2 19 + 3 + 3 17 + 5 + 3 17 and 4 twos 17, 2 threes and 2 twos 13 + 7 + 5 13 and 6 twos 13 and 4 threes 11 and 2 sevens 11 and 7 twos and a bunch more up to 10 twos and 5 11 twos and 3
What do you add to 1 five to make 4 twos?
3 ones
What do you add to three and three over eight to make seven?
three and 5 over 8 = 7
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