Question

The number 21328 has a unique feature :
The sum of first four digits equals the units digit. How many even five- digit number have this unique property?

Answer 1

@waterineyes

Answer 2

It will be like :

100001..

Answer 3

*10001

Answer 4

ok

Answer 5

Oh even five-digit number the question is asking I think.

Answer 6

For even 5 digit numbers, last digit should be 0, 2, 4, 6, 8.

Answer 7

ok

Answer 8

ok can we list those Numbers ?

Answer 9

Yes we can but I can't..
For 2, these are :

10012
11002
10102.

Answer 10

Like wise we have to find for 4, 6, and 8..

For 0, there will be no number. because number formed will be 00000, which is not a 5-digit number.

Answer 11

@hartnn @AravindG .

Don't worry @goformit100 we have other helpers too..

Answer 12

Sure

Answer 13

For 4 it should be:
11114
20024
22004
20204
30014
31004
30104
10034
10304
13004

Answer 14

ok

Answer 15

For 6 it will be more and for 8 even more..

But it is possible to list them..

Answer 16

Maybe you can do them with permutations...

Answer 17

Ya I was thinking of that

Answer 18

Yes, I don't know the proper method to do, it will be done by Permutations, because here arrangement of digits is involved..

So that is why I was doing it manually.

Answer 19

I thing for 0, the property must not be possible.

Answer 20

No it is not possible for 0..