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प्रश्न
Kavin has four cards 
List down all 3-digit numbers possible with these cards without repetition
उत्तर
974, 946, 976, 964, 947, 967
794, 746, 796, 764, 749, 769
497, 476, 469, 479, 467, 496
697, 679, 674, 647, 694, 649
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