18
4 and 16 both qualify.
77
41-- Less than 100-- 42 is the multiple of 7-- 4 + 1 = 5
6
This number could be 120 or 240.
I would think 100 is the answer.
989. If there is a remainder of 2 when divided by 3, the number is one less than a multiple of 3. If there is a remainder of 4 when divided by 5, the number is one less than a multiple of 5. Thus the number required is one less than a multiple of the lowest common multiple of 3 and 5 (that is 15). So what is needed is an even multiple of 15 less than or equal to 1000: 1000 ÷ 15 = 662/3 Thus the highest even multiple of 15 not greater than 1000 is 66 x 15 = 990, and the required number is 989.
The answer is a number that is a multiple of 12 and 9 and is between 100 and 199. The multiples of 12 and 9 in this range are 108, 144 & 180. 180 has both the hundreds and unit digits less than 8 (the tens digit).
You may have any number of digits, but your last digit must be ' 9 '.
19
-- Its various digits are all the same.-- It's a multiple of 11.-- It exists in a relatively narrow range of reality ... more than 32 but less than 34.-- Its various digits are all more than 2 but less than 4.-- Each if its various digits is a multiple of '3', and their sum is also a multiple of '3'.This is truly a unique number! For each of these interesting facts, there is only an infinite number ofother numbers that share the same interesting fact.
144