@ @pbjïØ Üa@ @XP 5 () .C(5,2) = 5! = 10 2! × 3! .C(5, 3) = 5! = 10 2! × 3! .C(5, 4) = 5! = 5 4! ×1! .C(5,5) = 5! = 1 5! × 0! .10 + 10 + 5 + 1 = 26 .I .25 − 5 − 1 = 26 .I E () : PENCILS E () ()ب