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driskell3
15.12.2020 •
Mathematics
(a)
Evaluate each of the following:
(i)
10! X 20!
17! X 9!
Solved
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Ответ:
Step-by-step explanation:
1)
Given the expression
Now, multiplying the result
so
Thus, we conclude that:
2)
Given the expression
Now, multiplying the result
so
Thus, we conclude that:
Ответ:
total bolts=21
total nuts= 12
no of way picking bolt and nut is= 21*12=252
no of way getting thick bolt and thick nuts = 9*7=63
no of way getting medium bolt and medium nut=8*3=24
no of way getting thin bolt and thin nut= 4*2=8
total ways=63+24+8=95
required probability= 95/252=0.3769