All numbers divisible by both 22 and 12 are also divisible by which of the following?
Please choose from one of the following options.
66
58
77
83
14

Question

All numbers divisible by both 22 and 12 are also divisible by which of the following?
Please choose from one of the following options.
66
58
77
83
14

eskelle · Answer

do you have any guesses?

fisherdevo · Answer

14 and 66? are my guesses

eskelle · Answer

well what do the numbers 22 and 12 have in common?

fisherdevo · Answer

there 10 number apart

plainntall · Answer

What are the prime factors?
For 22 you have 2*11
For 12 you have 2*2*3
For a number to be divisible by both numbers all the primes have to be in it.
2*3*11=66
multiples of are
(12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132*, 
(22, 44, 66, 88, 110, 132*, 
(66, 132*,

plainntall · Answer

The first term that 12 and 22 are both factors of is also the first term 66 is a factor.

fisherdevo · Answer

ok i still dont get it that well could u explain it a little easier

plainntall · Answer

I am guessing you know what prime numbers are, they are numbers that have factors of 1 and itself like 1, 2, 3, 5, 7, ...

Prime factors of other numbers are factors that are prime numbers.

Does any of that remind you of your reading or lesson that this problem is apparently testing?

plainntall · Answer

This might help. It is the Khan's unit on prime and composite numbers. https://www.khanacademy.org/math/in-sixth-grade-math/playing-numbers/prime-composite-numbers/v/prime-numbers

fisherdevo · Answer

ok thanks alot