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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.
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∙ 13y ago
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Required numbers from 200 and 300 are 207,217,227,237,247,257,267,270,271,272,273,274,275,276,278,279,287,297 these are the numbers therefore, the answer is 18
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The sum of the integers between 101 and 300 inclusive is equal to ((101+300) x 200) / 2 = 40100.
What pair of numbers between 200 and 300 that have the given GCF of 13?
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the diffrenece between two 3 digit numbers is a palindrome between 200 and 300. what are the numbers?
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How many odd numbers are there between 100-200?
300
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216 and 234
What two numbers between 200 and 300 have a GCF of 8?
208 and 216
What 2 numbers between 200 and 300 have GCF 7?
280 and 287
What number between 200 and 300 is divisible by 9 but not 2?
These numbers between 200 and 300 are divisible by nine but not by two: 207, 225, 243, 261, 279, 297.
What are the prime numbers between 200 and 300?
The prime numbers between 200 and 300 are 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, and 293.
