Step-by-step explanation:
The answer is B and C
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Answer:
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There are several information's of immense importance already given in the question. Let us write them down first
Number of edges of the regular polyhedron (E) = 30
Number of vertices of the regular polyhedron (V) = 12
Let us assume the number of faces of the regular polyhedron = F
Then
V - E + F = 2
12 - 30 + F = 2
f - 18 = 2
F = 20
From the above deduction, it can be easily concluded that the number of faces of the regular polyhedron is 20.
I can’t answer if you don’t show the multiple choice...
Answer: 323
Step-by-step explanation:
The formula to calculate the sample size for proportion is given by :_
Given : Significance level :
Critical value :
Margin of error :
The proportion of successes :
Now, the required sample size will be :-
Hence, the minimum required sample size = 323