A) \[\sqrt{30}\]
B) 5
C) 25
D) \[\sqrt{90}\]
Correct Answer: B
Solution :
[b] \[n=180,p=P\](getting a six) \[=\frac{1}{6}\] and \[q=\frac{5}{6}\] So, S.D. \[=\sqrt{npq}\]
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