Class 12 Probability · Conceptual Answer1 Markscomplement_rule
Class 12 Maths · Probability · Conceptual Answer #32
An unbiased coin is tossed independently four times. Find P(at least one head).
✅ Step-by-Step Solution
Final Answer: 15/16
- P=1−P(TTTT)=1−(1/2)⁴=15/16.
- 15/16
📋 CBSE Stepwise Marking Scheme
- [0.5 marks] P=1−P(TTTT)=1−(1/2)⁴=15/16.
- [0.5 marks] 15/16
Master Chapter 13: Probability
Practise interactive questions, flashcards, visual mind maps, and timed board tests for Probability.
← Previous Question
Assertion (A): If X takes 0,1,2 with probabilities 1/4,1/2,1/4, its…
Next Question →A fair die has 1,2,3 marked red and 4,5,6 marked green. Are A=“even”…
More Practice Questions in Probability
Related Questions in Probability
Class 12 Probability · Mcq Single Correct
Given P(A)=4/5 and P(A∩B)=7/10, find P(B|A).
Class 12 Probability · Mcq Single Correct
Five independent fair coins are tossed. Find the probability of at least one head.
Class 12 Probability · Mcq Single Correct
Given P(A|B)=0.3, P(A)=0.4, P(B)=0.8, find P(B|A).
Class 12 Probability · Mcq Single Correct
Two independent fair dice have sum 9. Find the conditional probability that at least one die…
Class 12 Probability · Mcq Single Correct
Choose an ordered pair (a,b) uniformly with distinct a,b from {1,2,3,4,5}. Find P(a/b is an…
Class 12 Probability · Mcq Single Correct
Given P(A)=0.4, P(B)=0.3 and P(A∪B)=0.5, find P(B′∩A).