Question

Consider the number 4n, where n is a natural number. Check whether there is any value of n for which 4n ends with the digit zero.

Answer 1

4n+n=0
4nsquare=0
nsquare = 0-4
n=square root of-4
n=-2

Answer 2

Answer:

n = 5  

Step-by-step explanation:

The multiples of 4  ending with 0 =  20,40,60,80,....

20 =  4*5

40 = 4*10

Here n can only be 5 and not 10 as n is a single digit