How many 2 digit numbers are there, such that the units digit is strictly smaller than the tens digit?
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➡HERE IS YOUR ANSWER⬇
For your the best clearance, let me write the numbers of two digits (such that the units digit is strictly smaller than the tens digit) :
10
20, 21
30, 31, 32
40, 41, 42, 43
50, 51, 52, 53, 54
60, 61, 62, 63, 64, 65
70, 71, 72, 73, 74, 75, 76
80, 81, 82, 83, 84, 85, 86, 87
90, 91, 92, 93, 94, 95, 96, 97, 98
Therefore, there are 45 numbers according to the given question.
⬆HOPE THIS HELPS YOU⬅
For your the best clearance, let me write the numbers of two digits (such that the units digit is strictly smaller than the tens digit) :
10
20, 21
30, 31, 32
40, 41, 42, 43
50, 51, 52, 53, 54
60, 61, 62, 63, 64, 65
70, 71, 72, 73, 74, 75, 76
80, 81, 82, 83, 84, 85, 86, 87
90, 91, 92, 93, 94, 95, 96, 97, 98
Therefore, there are 45 numbers according to the given question.
⬆HOPE THIS HELPS YOU⬅
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