3+6+9+12 = 30
24
Yes, to check if divisible by 3, sum up the digits [4 + 0 + 1 + 7 = 12]. If the sum is a multiple of 3, then the number is a multiple of 3 as well (12 is a multiple of 3, in this case). Note the sum digit method works for 3 and 9, not other numbers.
A common multiple of 3 and 4 is a number which is a multiple of 3 and of 4. The first 3 common multiples of 3 and 4 are 12, 24, 36
96
96
96
0.75
There are 36 permutations of rolling two standard dice. Of them, four (1+4, 2+3, 3+2, and 4+1) sum to five, and three (6+4, 5+5, and 4+6) sum to ten. The probability, then of rolling a multiple of five is 7 in 36, or about 0.1944.
There are two answers either 8x + 4 or 7x + 4
The first odd positive integers are "1" and "3" which the sum is 4.
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
1+3 = 4