420
1 and 5
Which number is a factor of 10 , but not a multiple of 5
A factor of 20 is a number that divides evenly into 20 without leaving a remainder. The factors of 20 are 1, 2, 4, 5, 10, and 20. Among these, the number 5 is a factor of 20 but not a multiple of 4 because it does not result from multiplying 4 by any integer.
There is no such number. If a multiple of 4 is a factor of 30, then 4 must also be a factor of 30, but 4 is not a factor of 30 (the factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30), thus no such number exists.
The only prime factor of 4 is 2. No prime number is a multiple of 5.
The factors of 3 are 1 and 3.The factors of 4 are 1, 2, and 4.The factors of 5 are 1 and 5.The only common factor of 3, 4, and 5 is 1. The least common factor is 1.
It is: 4 or 2
There is only one common factor of 3, 4 and 5 which is 1.
d. 3
ANSWER: 3 is the prime number.3 is a prime number because the only factors of 3 are 1 and itself (3).4 is a composite number because 4 has other factor like 2 aside from 1 and itself (4).10 is a composite number because 10 has other factor like 2 and 5 aside from 1 and itself (10).
One way to check if 3 is a factor of a "larger number", add all of the individual numbers of the "larger number" together and see if 3 factors into it. For example: 6435. Add 6 + 4 + 3 + 5 = 18 3 is a factor of 18, so 3 is a factor of 6435.
A factor of a number is an integer that divides the number evenly (without remainder). So 2 and 3 are factors of 12 (12/2 is 6 and 12/3 is 4), but 7 is not a factor of 12 (12/7 is 1 remainder 5). 2 and 3 are not factors of 5 (notice 5 is prime).