Lesson Example Discussion Quiz: Class Homework |
Step-5 |
Title: Addition theorem for mutually exclusive events |
Grade: 9-a Lesson: S3-L5 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
Two dice are tossed once. Find the probability of getting an even number on first dice or a total of 8 by using addition theorem. |
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2 |
Step |
Total number of events. |
36 |
3 |
Step |
probability of an even number on 1st die. |
P(A) = \$\frac(18)(36) = \frac(1)(2)\$ |
4 |
Step |
probability of a total of 8. |
P(B) = \$\frac(5)(36)\$ |
5 |
Formula: |
Addition theorem ⇒ P (A ∪ B) = P (A) + P (B) |
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6 |
Step |
Simplification. |
\$\frac(1)(2) + \frac(5)(36)\$ |
7 |
Step |
After simplification we get. |
\$\frac(23)(36)\$ |
8 |
Answer |
C |
|
Tutor: Questions
| Seq | Type | Question | Audio |
|---|---|---|---|
1 |
Problem |
What did you learn from this problem? |
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2 |
Clue |
What did you learn from the clues? |
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3 |
Hint |
What did you learn from the Hints? |
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4 |
Step |
What did you learn from the Steps? |
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5 |
Step |
How can we improve the Steps? |
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