-- Neither 2 nor 5 is divisible by 18.
-- 18 is divisible by 2, but not by 5.
18
There are 18 numbers with 2 digits that are divisible by 5. First 2 digit number is 10 → 10 ÷ 5 = 2 → first 2 digit number divisible by 25 is 5 × 2 Last 2 digit number is 99 → 99 ÷ 5 = 19 4/5 → last 2 digit number divisible by 5 is 5 × 19 → There are 19 - 2 + 1 = 18 numbers with 2 digit divisible by 5.
18 is not divisible by 5 and 7.
No. If they are even numbers and not 2, they are not prime. 20 is divisible by 1, 2, 4, 5, 20, and 20. 18 is divisible by 1, 2, 3, 6, 9, and 18.
To determine if 1485 is divisible by 2, 3, 5, 6, 9, and 10, we can check each divisor. 1485 is odd, so it is not divisible by 2. It is divisible by 3 (since the sum of its digits, 1+4+8+5=18, is divisible by 3) and by 5 (it ends in 5). However, since it is not divisible by 2, it cannot be divisible by 6 or 10, and since it is not divisible by 9 (the sum of its digits is not divisible by 9), it is not divisible by that either. Thus, 1485 is only divisible by 3 and 5.
5715 is not divisible by 2: the last digit is not an even number or 05715 is divisible by 3: as the last two digits when added together is a multiple of 35715 is divisible by 5: as the last digit is a 5 or 05715 is divisible by 9: as if u added all the digits of the number it will be divisible by 9, in this case 5 +7+1+5=18 and 18 is a multiple of 95715 is not divisible by 10: as the last digit is not a 0
2 and 3, yes. 5 and 10, no.
18
5
18 is divisible by 1, 2, 3, 6, 9, and 18.
No18 is divisible by 225 is divisible by 5
The numbers which divide 2 and 9 are indirectly divisible by 18.