Question
A bag contains red, green, and blue balls, with a total
of 16 balls. The probability of drawing two blue balls in one draw is 3/8. How many blue balls are in the bag?Solution
Let number of blue balls in the bag be ‘x’.According to question;xC2/16C2 = 3/8Or, x(x – 1) = 90Or, x2 – x – 90 = 0Or, x2 – 10x + 9x – 90 = 0Or, x(x – 10) + 9(x – 10) = 0Or, (x – 10)(x + 9) = 0Or, x = 10 or x = -9 (not possible)So, number of blue balls in the bag = 10
Justice Revati Mohite Dere was sworn in as the first woman Chief Justice of which High Court?
Who won the Belgian Grand Prix after George Russell's disqualification?
- Which Indian state became the top recipient of Foreign Direct Investment (FDI) in FY25?
In which river will India’s first solar-powered boat be launched?
Which entity recently launched the second international banking centre in Chennai to cater to the financial needs of global Indians?
Who won the Prime Minister election in Mauritius on November 11, 2024?
Which state recently joined the Ayushman Bharat PM-JAY scheme?
- Which central agency approved the River Cities Alliance (RCA) master plan?
Government has advanced the target of 20% ethanol blending in petrol from earlier 2030 to ______.
REC Limited has signed an agreement with which organization to aid in the education of approximately 75,500 children in the Siddharthnagar, UP?
Relevant for Exams:
