the number of 2 even digit no has 6 factors
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How many two digit numbers are there having 6 factors?
Sixteen: {12,18,20,28,32,44,45,50,52,63,68,75,76,92,98,99}
For example, the six factors of 99 are {1,3,9,11,33,99} .
Natural numbers with six factors have one of two forms:
p5
q2×p
where p and q are distinct prime numbers.
Two digit Natural numbers are less than one hundred, so 25=32 is the only number of the first type, and there are fifteen of the second type:
22×p for p=3,5,7,11,13,17,19,23
32×p for p=2,5,7,11
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Answer:
24
Step-by-step explanation:
1 2 3 4 6 8 12 are the factors....
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