Dan found a two digit odd number. one of its digits was half the other. the number is greater than 50. what number did dan find

63 if you write down all the odd numbers first, (you know that the double-digit will be the tens as any doubled number will be even) and then double the other digit you would get 21 63 105 147 189 as it is a two digit number it can only be one of the first two and it has to be over 50 therefore 63

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