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← Bihar Board Class 12 PYQ
Probability
Bihar Board Class 12 · Mathematics · 53 past questions
Topic
Basic probability and addition theorem
15
Independent events and multiplication theorem
14
Conditional probability
12
Equally likely outcomes with coins, dice and cards
6
Random variables and probability distributions
3
Word problems on truth-telling, survival and bags
3
Level
Easy
1
Moderate
2
Tough
0
Year
2026
0
2025
1
2024
0
2023
1
2021
0
2019
0
2018
1
2017
1
2016
0
2015
1
3 of 53 ·
show all
Q22
2025 Set E
2017
2015
A speak the truth in 75% cases and dB B in 80% of the cases. In what percentage of the cases are they likely…
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Q34
2023 Set E
A bag contains 4 red and 5 white balls and another bag contains 5 black and 6 green balls. A ball is taken…
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Q46
2018
Odds are 8:5 against a man, who is 55 years old, living till he is 75 and 4:3 against his wife who is now 48…
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