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# How many 2 digit numbers can be produced using the digits 12345678 and 9 if the repetition of the digits is not allowed?

Updated: 4/28/2022

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10y ago

Using the digits 12345678 and 9 without repeating any of the digits you can make 86 numbers. The number combinations are as follows:12 13 14 15 16 17 18 19, 21 23 24 25 26 27 28 29, 31 32 34 35 36 37 38 39,41 42 43 45 46 47 48 49, 51 52 53 54 56 57 58 59,61 62 63 64 65 67 68 69, 71 72 73 74 75 76 78 79,81 82 83 84 85 86 87 89,91 92 93 94 95 96 97 98

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10y ago

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Q: How many 2 digit numbers can be produced using the digits 12345678 and 9 if the repetition of the digits is not allowed?
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