Question
A bag contains ‘x’ blue balls and 9 yellow balls. If
the probability of getting a blue ball is 3/4, then find the probability of getting different coloured balls when two balls are drawn randomly from the bag.Solution
x/(x + 9) = 3/4
→ 4x = 3x + 27 → x = 27
Total balls = 36
P = (27C1 × 9C1)/(36C2) = (27×9)/630 = 243/630 = 27/70
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...
Relevant for Exams:
