no 1 dan 2 pakai caranya

1) kupon yg tidak berhadiah = 30 - 4 = 26
26/30 × 25/29 = 65/87
2) 3 pria 3 wanita = 5C3 × 4C3
= 5!/3!(5-3)! × 4!/3!(4-3)!
= 5×4×3!/3!×2×1 × 4×3!/3!
= 10 × 4
= 40
4 pria 2 wanita = 5C4 × 4C2
= 5!/4!(5-4)! × 4!/2!(4-2)!
= 5×4!/4! × 4×3×2!/2!×2×1
= 30
5 pria dan 1 wanita = 5C5 × 4C1
= 5!/5!(5-5)! × 4!/1!(4-1)!
= 1 × 4×3!/3!
= 4
banyaknya cara = 40+30+4 = 74