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a.) 2 * 12!
b.)9 * 2! * 11! = 18 * 11!
zad.14
a.)8³ =512
b.)V³₈ = 8! : 5! = 6* 7 * 8 = 336
zad. 16
C¹¹₂₀ = 20! : 11! * 9! = 12 *13 * 14 * 15 * 16 * 17 * 18 * 19 * 20 : 2 * 3 * 4 * 5 * 6 * 7 * 8 * 9 = 167.960
zad.18
C²₂₀ * C¹₁₃ = (20! : 18! * 2! ) * (13! : 12!1!) = 190 * 13 = 2470
zad.19
a.) C²₄ * C¹¹₄₈
b.)C⁵₁₃ * C⁸₃₉
c.)C⁶₁₃ * C⁷₃₉
zad.23
V²₅ = 5! : 3! = 20