If a fair coin is tossed three times, the probability of exactly two heads is: MCQ with Answer and Explanation

If a fair coin is tossed three times, the probability of exactly two heads is:
A. 1/4
B. 5/8
C. 3/8
D. 1/2
Answer: Option C
Solution (By JKSSB Mock Tests)
Number of ways: C(3,2)=3; each sequence probability (1/2)³; total 3/8.

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The term 'ultimate class frequencies' is associated with:
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Correct Answer: Option D


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In theory of attributes, ultimate classes are the mutually exclusive categories (AB, Aβ, etc.).

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Correct Answer: Option C


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