yes
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Armstrong numbers are properly termed pluperfect digital invariant (PPDI) numbers. For an n-digit PPDI, the number is equal to the sum of each of its digits raised to the nth power. For example, for n = 3, there is 153 = 1^3 + 5^3 + 3^3 = 1 + 125 + 27. Incidentally, the mathematician G H Hardy stated that there are only four 3-digit PPDIs. He added that, although amusing, "there is nothing in them which appeals to the mathematician".Armstrong numbers are apparently named after a computing lecturer at the University of Rochester named Michael F Armstrong. In the mid 1960s he devised Armstrong numbers as an exercise for his students.
153/3 = 51The middle number is 51, so the numbers are...50, 51 and 52
yes for a number to be divisble by 3 you have to add the numbers together and see if you can divide it by 3 evenly 1+5+3= 9 9 can be divided by 3 evenly so that makes the number, 153 divisble by 3
There are 3 feet in one yard, so 153 feet is 51 yards
The sum of the digits of a multiple of 3 sum to a number that is itself divisible by 3. Example : 153 : 1 + 5 + 3 = 9 which is divisible by 3 so 153 is a multiple of 3. But : 206 : 2 + 0 + 6 = 8 shows that 206 is NOT a multiple of 3.