If the number is a multiple of 8 then it must be an even number, so possibilities are: 128, 146, 164 and 182. Only 128 divides evenly by 8, so that's the mystery solved!
423
Commas are used to separate large numbers into groups of three digits. Each group is called a period.
-99
Armstrong numbers are the sum of their own digits to the power of the number of digits.
There are 4 options for the hundreds digit (3, 4, 5, or 6), and 4 options for the tens digit (including the possibility of repeating the hundreds digit). Similarly, there are 4 options for the units digit. Therefore, the total number of 3-digit numbers that can be formed using the digits 3, 4, 5, and 6 with repetition allowed is 4 x 4 x 4 = 64.
14 and 35
423
14 and 35
25 digit numbers would be septillions.
14 and 35
ten
41
Yes If a numbers last two digits (assuming that it has at least two) is a multiple of 4, the whole number is also a multiple of 4. If the last two digits are 00 (assuming in this case it has at least three digits), the number is also a multiple of 4. For example, 100 and 200 are multiples of 4.
-4
How do i multiple double digits for example 73×28
630
Divisibility Rules 2 if it is even 3 if the sum of digits is a multiple of 3 4 if the last two digits is a multiple of 4 6 if it is divisible by 2 and 3 8 if the last three digits is multiple of 8