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What number is greater than 12 and less than 40 and only has three factors?
25
What number is greater than 50 but less than 10 has 2 factors and has 66 and 605 as multiples?
There is no number that is greater than 50 AND less than 10 as 10 is less than 50! However, a number greater than 10 and less than 50 which fits the bill is 11 - it only has 2 factors 1 & 11 (it is prime) and has multiples 6x11 (=66) and 55x11 (=605). If the question was greater than 50 and less than 100 then the number could only be 66 as 66 is the only number greater than 50 which has 66 as a multiple, but 66 has 8 factors (1, 2, 3, 6, 11, 22, 33, 66), meaning there is no number in that range.
What is a number that's greater than 40 less than 60 divisible by 6 and has 5 factors?
There is no such number. All multiples of 6 must have 1, 2, 3, and 6 as factors. And each one must have the number itself as a factor. That makes 5 factors. But if these are the only factors, then the number cannot be greater than 40.
What is a number less then 100 has 9 factors and 19 is one of the factors?
The only number less than 100 with exactly nine factors is 36. 19 is not one of the factors.
What is a number that has four identical even factors greater than 1 and that has only 1 and itself as factors?
A number that has only one and itself as factors is a prime number and so therefore it can't have four other identical factors.
What do you call a number that only has 2 fators?
prime number if it only has less than 2 factors
Is a prime number a whole number greater than 1 that has only itself and 1 as its factors?
Yes.
What is a whole number greater than 1 with only 2 factors 1 and itself?
A prime number.
What is a whole number greater than one with only two factors 1 and itself?
A prime number.
What is the whole number greater then 1 whose only factors are 1 and itself?
That's a prime number.
What is the highest number less than 100 with the least factors?
It is 97 which has only two factors because it is a prime number
What is the only prime number that is greater than 25 and less than30?
29
