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18. In a two-digit number, digit in unit's place is twice the digit in ten's place. If 27 is added to it, digits are reversed. Find the number.
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Acoin bank containing only dimes and quarters has 12 more dimes than quarters. the total value of the coins is $11. how many quarters and dimes are in the coin bank?
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Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).
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Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).
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18. In a two-digit number, digit in unit's place is twice the digit in ten's place. If
27 is added...
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