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Question #41812
The Question
Let , , and , where . Let be the volume of the parallelepiped whose coterminous edges are . A biased coin, which shows heads with probability , is tossed 10 times. Let denote the number of heads obtained. Find the value of
Options
- A.
1
- B.
2
- C.
3
- D.
4
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Bridge
Practice problems that bridge the gap between foundational theory and advanced practical application.
Concepts Behind This Question
Bernoulli Trials Logic|Scalar Triple Product Volume Logic|Linear Independence vs Dependence
Why This Question Is Tricky
Common Mistakes
The question employs the 'Degeneracy Trap' by linking the probability of a Bernoulli trial to the volume of a parallelepiped formed by three complex-looking trigonometric vectors.
Students often rush to expand the determinant, which is algebraically tedious and highly prone to errors.
The trap tests whether the student checks for linear dependence first; recognizing that immediately yields a volume (and thus probability) of 0.
Consequently, the binomial distribution collapses to a trivial deterministic case where with certainty, simplifying the expectation sum instantly.
Quick Facts About This Question
Question Information
| Subject | Mathematics |
| Chapter | Probability - Class 12 |
| Concept | Bernoulli Trials Logic |
| Difficulty | 8 |
| Cognitive Load | 7 |
| Target Solve Time | 160 sec |
| Access | Free |