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`        Consider an urn in which 4 balls have been placed by the following scheme : A fair coinis tossed; if the coin falls head, a white ball is placed in the urn, and if the coin falls tail, a redball is placed in urn. (i)What is the probability that the urn will contain exactly3 white balls ? `
2 years ago

Athul
20 Points
```							Probability of No of white balls being 3 is same as probability of getting 3 heads ......To find the p (3 heads): n(3H)/n(S). = 4/16=1/4.....      And:1/4
```
2 years ago
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### Course Features

• 101 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions