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Earn +20 ptsQ: What 2 digit numbers has 9 factors?
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How many 2 digit numbers have even no of factors?
Total number of 2-digit numbers = (99 - 9) = 90 of themEvery number that isn't a perfect square has an even number of factors.2-digit numbers that are perfect squares: 16, 25, 36, 49, 64, and 81 = 6 of themRemaining 2-digit numbers = (99 - 6) = 93 .
How many 2-digit numbers contain the digit?
It would help to know which digit. 0 appears in 9 numbers and each of the others in 18 numbers.
How many three-digit numbers can you make from 0 6 0 9 2 0 1 2?
There are no three didgit numbers but there are 63 three digit numbers.
What is the greatest possible product of a 2 digit and a 1 digit number?
Highest 2-digit number = 99 Highest 1-digit number = 9 Highest possible sum from 2, 2-digit numbers = 198 Highest possible sum from 2, 1-digit numbers = 18
How many 2-digit counting numbers are there?
99 - 9 = 90
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