Question
A bag contains 7 orange balls, 8 red balls and 5 black
balls. Three balls are drawn at random. Find the probability that at least two balls are red.Solution
Total = 7 + 8 + 5 = 20
Required probability = (Two red and one other) + (Three red)
= 3 × [(8/20) × (7/19) × (12/18)] + (8/20 × 7/19 × 6/18)
= (2016/6840) + (336/6840)
= (2352/6840) = (98/285) = 5/57
India’s annual trade surplus with the United States is projected to rise by how much under the new trade agreement?
Which country was designated as a “Priority Foreign Country” in the USTR Special 301 Report 2026?
- What is a major reason for UNESCO’s launch of the campaign "Imagine a world with more women in science"?
- Which country launched the Shenzhou-20 mission to its space station?
Which entity recently launched the second international banking centre in Chennai to cater to the financial needs of global Indians?
What was India’s medal tally at the 57th International Chemistry Olympiad in Dubai, 2025?
At the 2024 Paralympics, Manisha Ramadass won a bronze medal in which sport?
The proposed EPFO platform ‘E-PRAAPTI’ is mainly aimed at:
Which states will host the Khelo India Winter Games 2025?
Under the revised guidelines of the Market Intervention Scheme (MIS), what is the new procurement limit for perishable crops when prices fall significan...
