14
Four less than a number and three is the number less one.
n - 6 = 20
6 less than x-6 is x-12, and that equals 8 if x is 20 and is less than 8 if x is less than 20.
"12" has 6 factors.
Let the number be x: 7x-6 = -20 7x = -20+6 7x = -14 x = -2
The positive even numbers less than 20 are: 2, 4, 6, 8, 10, 12, 14, 16, 18
12
They are 1, 2, 7 and 14.
20
18: 1-18, 2-9, 3-6.
6 yards, one yard equals three feet. 6 times three is 18. 18<(less than)20 so less than.
Almost perfect numbers are those that are one less than a perfect number. The perfect numbers between 5 and 20 are 6 and 28, with 6 being the only perfect number in this range. Therefore, the almost perfect number in this interval is 5, as it is one less than 6.