This is a very confused question because "you" and "I" used inconsistently. Moreover, the question, as phrased, has no solution. If the second clause had been "... not LESS than 20 ...", the answer would have been 24.
the greatest multiple of four less than 100, is 96
99 (= 11 x 9) is the largest multiple of 11 less than 100.
Multiple of 4 less than 15
980
The multiples of 4 that are less than 30 are 4, 8, 12, 16, 20, 24, 28. So the greatest multiple of 4 that is less than 30 is 28.
20
the 14th one
Every prime number except 2 must be odd. This is because if it were even it would be divisible by 2 and so wouldn't be a prime number. The next point to note is that all odd numbers are one more or one less than a multiple of 4. Because 2 more than a multiple of 4 is even, and 3 more than a multiple of 4 is the same as 1 less than the multiple of 4 above. Thus every prime number except 2 must be 1 more or 1 less than a multiple of 4.
14
27
65
Find a multiple of 110 that is less than (or equal to) the decimal.Find the difference between this multiple and the decimal.Repeat for the next multiple of 110 (which will be 110 more than the previous multiple).Select the multiple of 110 which gives the smaller answer.
No. A common multiple is a multiple of both numbers. There is no multiple of 17 that is less than 17.
the greatest multiple of four less than 100, is 96
123 and 129 meet those specifications.
you
In that range, every prime number is either one more or one less than a multiple of 4. This also works for 6.