Q89.A person throws two fair dice. He wins Rs. 15 for throwing a doublet (same numbers on the two dice), wins Rs 12 when the throw results in the sum of 9 , and loses Rs. 6 for any other outcome on the throw. Then the expected gain/loss (in Rs.) of the person is: (1) 1 loss (2) 1 gain 2 2 (3) 2 gain (4) 1 loss 4
What This Question Tests
The problem asks for the expected gain/loss in a dice game, requiring the calculation of probabilities for specific outcomes (doublet, sum of 9, other) and then applying the expected value formula.
Concepts Tested
Formulas Used
E(X) = Σx_i P(X=x_i)
Probability of events with two dice (doublet, sum of 9)
📚 NCERT Sections This Tests
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13.3 A given coin has a mass of 3.0 g. Calculate the nuclear energy that would be required to separate all the neutrons and protons from each other. For simplicity assume that the coin is entirely made of 6329Cu atoms (of mass 62.92960 u).
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Physics Class 11 · Chapter 2
2.1 Two charges 5 × 10–8 C and –3 × 10–8 C are located 16 cm apart. At what point(s) on the line joining the two charges is the electric potential zero? Take the potential at infinity to be zero.
📋 Question Details
- Chapter
- Probability
- Topic
- Expected value
- Year
- 2019
- Shift
- 12 Apr Shift 2
- Q Number
- Q89
- Type
- MCQ
- NCERT Ref
- Class 12 Mathematics Ch 13: Probability
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