13 has a multiple of 26
To be a multiple of 4, 10 and 20 the number must be a multiple of their lowest common multiple. lcm(4, 10, 20) = 20 What is required is a multiple of 20 between 61 and 107. The numbers 80 and 100 both satisfy the problem of being between 61 and 107 and being a multiple of 4, 10 and 20.
The number 20 is.
Because 20 is a multiple of 10.
13
The Least Common Multiple (LCM) of 10 and 20 is 20. Since 20 is a multiple of 10, it is automatically the LCM of the set.20 is.
20
A multiple is found by multiplying the number. Whereas a factor is what the number can be divided by. For example - multiples of 10 are; 10, 20, 30, 40, ... Factors of 10 are; 1, 2, 5, 10
80 and 100 both qualify.
10
Well, honey, a multiple of 10 that ain't a multiple of 20 is any number that can be divided by 10 but not by 20. So, numbers like 10, 30, 50, or 70 fit the bill. Just remember, if it's divisible by 20, it's out of the running for this little game.
16
13 is a prime number in that range. So are 11, 17 and 19.