watever

this is really confusing me... i need to get this done & i have no idea wat so ever of n e of the numbers in the 2x5 grid HELP PLEASE!

Oh yeah. I'm really not properly concentrating on this and I should be before I post.

 

Ignoring (just for simplicity for this response) the fact that I got the multiplication the wrong way round... you are correct' date=' 2 lots of 5 does end in a zero, my point was that [u']any[/u] lots of 0 will end in a 0 and so if the first 4 digit number ended in 0 then so must the other (because the other is a multiple) and then you would need two zeros, which you are not allowed. However as I got my multiplication the wrong way the point is mute. Because the first 4 digit number is at the top so cannot have a 0 in it.

 

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Now as matt grime right pointed out I got the multiplication wrong, which means that you could have a 0 bottom row on the far right.

 

s pepperchin: As the bottom row can contain: 0, 1, 3, 5, 7 or 9, which is 6 possible digits for 5 spaces one of those numbers can go on the top row. Using 5 at the top (as the last digit of the 4 digit number) would be a possible combination.