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let n be a natural number and the division of n divided by 5 leaves 4 and the division of n divided by 2 gives a remainder of 1 . What must be the units place digit of n

let n be a natural number and the division of n divided by 5 leaves 4 and the division of n divided by 2 gives a remainder of 1 . What must be the units place digit of n
 

Grade:8

2 Answers

Arun
25750 Points
4 years ago
Dear student
 
N/5 = 4 means unit digit is 4 or 9
Now N/2 leaves 1 hence unit digit is 9 as N must be an odd number.
Vikas TU
14149 Points
4 years ago
Basically, N is of the form 5k+4 where k is an integer!
(This is because, it leaves a remainder 4 when divided by 5)
Put k = 0, 1 ,2 3, 
k = 0 = 4 
k = 1 = 9 
k = 2 = Unit digit is 4 , 
K = 3 = Unit digit is 9 , 
Now N/2 leaves 1 hence unit digit is 9
Hope this helps 
 
Good Luck 

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