If the division N ÷ 5 leaves a remainder of 4, what might be the one’s digit of N?
If remainder = 4, then the one,s digit of ‘N’ must be either 9 or 4.
If the division N ÷ 2 leaves no remainder (i.e, zero remainder), what might be the one’s digit of N?
Suppose that the division N ÷ 5 leaves a remainder of 4 and the division N ÷ 2 leaves a remainder of 1. What must be the one’s digit of N?
Check the divisibility of the following number by 9.
1. 108 2. 616 3. 294
4. 432 5. 927