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cate numere de 4 cifre se pot forma cu cifrele 0;2;4;6?

Răspuns :

2046,2604,2406,
4026,4206,4620
6024,6204,6420 se pot forma 9 numere

2046,2064,2406,2460,2640,2604
4026,4062,4206,4260,4620,4602
6042,6024,6240,6204,6420,6402