chloeethoma24
17.12.2019 •
Mathematics
1) how many ways can six books be arranged on one shelf? a) 21 b) 120 c) 360 d) 720 2) there are eight girls competing in an ice-skating competition. in how many ways can they finish in first, second, and third place? a) 336 b) 1,680 c) 2,016 d) 40,320 3)how many ways can a president and vice president be selected from a class of 12? a) 23 b) 72 c) 132. d) 1,320 4)how many ways can seven students line up for a class picture? a) 5,040 b) 210 c) 28 d) 7
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Ответ:
D ) 720
2 ) 8 · 7 · 6 = 336
A ) 336
3 ) 12 · 11 = 132
C ) 132
4 ) 7 · 6 · 5 · 4 · 3 · 2 · 1 = 5,040
A ) 5,040
Ответ:
52p = 512
p = 512/52
p = 9.85
p ≈ 10 (nearest whole number)