To have a gcf of 18 they must have one factor of 18 in common and no other factor, ie the second factor of the numbers must be relatively prime. The multiples of 18 between 200 and 300 are: 12 x 18 = 216 13 x 18 = 234 14 x 18 = 252 15 x 18 = 270 16 x 18 = 288 12 is relatively prime to 13 13 is relatively prime to 14, 15 & 16 14 is relatively prime to 15 15 is relatively prime to 16 (Pairs of numbers are being considered, so as 12 is relatively prime to 13, 13 is also relatively prime to 12 and thus is only listed when the numbers increase, ie under 12 and not under 13.) Thus the pairs: 216 & 234 234 & 252 234 & 270 234 & 288 252 & 270 270 & 288 all have a gcf of 18.
You can multiply the number 18 by different numbers that are relatively prime, for example by different prime numbers.
22 is not relatively prime
yes, they are relatively prime.
Selling price = 18 + 18 x 105% = 18 + 18 x 105/100 = 36.90
No.
No, they are not relatively prime.
No, they are not relatively prime.
no
No.
Yes, 96 and 105 are relatively prime because they have no prime factors in common.
Eleven numbers less than 105 are relatively prime to 105. They are 82, 83, 86, 88, 89, 92, 94, 97, 101, 103, and 104.
No. To be relatively prime, numbers have to have a GCF of 1. Numbers ending in 5 are divisible by 5.
No, they are not.
no
Yes, they are. 5 is the only prime factor of 25 and 5 is not a factor of 18, so they have no prime factors in common, which is what relatively prime means.
Yes.