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01-07-2021
Mathematics

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How many 2-digit numbers can you make without repeating the digits? Numbers like 34 not like 55.

80

81

83

84

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01-07-2021

Answer:

81.

Step-by-step explanation:

The 2 digit numbers without repeated digits is 81. There are 90 two-digit numbers in the decimal system. In 9 of them, both digits are the same number. So, there remain 81 without repetitions.

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