Question:
If N ÷ 5 leaves remainder 3 and N ÷ 2 leaves remainder 0, then N ÷ 10 leaves remainder 4.
Solution:
False
Explanation:
Given that, when N is divided by 5, it leaves the remainder 5. (i.e) N = 5n+3 where n= 0, 1, 2, 3, …
Similarly, when N is divided by 2, it leaves the remainder 0. So N is an even Number. (Using divisibility test rule of 2).
But in N = 5n+3, the second term is odd.
So, 5n is an odd number.
When you substitute n = 1, 3, 5 … in 5n+3, we will get 8, 18, 28 …
Now, if we divide N by 10, it should be written as
N = 10 n+8
So, when N is divided by 10, it always leaves the remainder 8.