Question

stie cineva la astea 

1) card B ,unde B ={ x E IN* I x < 1000}

2) abcd, unde a, b ,c si d sunt numere naturale consecutive

Answer 1

1)B={1,2,3....999}          cardB=999
2)1234,2345,3456,4567,5678,6789,9876,8765,7654,6543,5432,4321,