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  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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Topic review (newest first)

bobbym
2012-10-13 01:01:09

Hi juan;



I am taking it that you mean the sum of the two 4 digit numbers must be a 4 digit number and in no column can there be a carry.

juan
2012-10-13 00:41:40

Two 4-digit numbers are to be formed such that the sum of the number is also a 4-digit number and in no place the addition is with carrying the number of ways of forming the number under above conditions is

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