Question

39. Calcule:
ajudeeeeemmm
.
.
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Answer 1

Resposta:

Explicação passo a passo:

a)C₅,₃=5!/3!(5-3)!=5!/3!2!=5.4/2.1=20/2=10

b)C₇,₅=7!/5!(7-5)!=7!/5!2!=7.6/2.1=42/2=21

c)C₆,₂=6!/2!(6-2)!=6!/2!3!=6.5.4/2.1=120/2=60

d)C₁₀,₃=10!/3!(10-3)!=10!/3!7!=10.9.8/3.2.1=720/6=120

C₅,₃=5!/3!(5-2)!=5!/3!2!=5.4/2.1=20/2=10

C₁₀,₃/C₅,₃=120/10=12