Question

if the division N ÷ 5 leaves a remainder of 3 . what might be the ones digit of N​

Answer 1

Explanation:

let k be an odd number

k= 2*+1

now , n=5*(2*+1)+3

= n=10*+8

so, n leaves a remain 8 when dived by 10,

so, the ones digit is 8

Answer 2

Answer:

3 or 8

Explanation:

We know that the divisibility rule for 5 is that it should end in 0 or 5 it doesn't matter how long the number is or how many digits it has if it ends with 0 or 5 it is divisible by 5

Now, we know that the remainder is 3

and a number is divisible only if it ends with 0 or 5

so logically to get a reminder of 3 then its ones place or units place should end in 3 or 8 (think about it.......)

To check this we can look into an example

1) let the number be 23

so when we divide by 5 we get the quotient as 4 and remainder 3

2)let the number the 28

so when we divide by 5 we get the quotient as 5 and the remainder as 3

so its units place will be 3 or 8 when the remainder becomes 3

Hope you understood it........All the best