Question
There are ‘x’ students in a class. Out of them
‘y’ are girls. The number of boys is 5 more than the number of girls. The sum of weight and the average weight of the girls is 506 kg and 46 kg, respectively. If 4 students are selected for a quiz competition then what will be the probability that the number of boys and the number of girls are equal?Solution
Total number of students = x The number of girls in the class = y The number of boys in the class = (y+5) Therefore the number of girls, => y = 506/46 = 11 Total number of girls = 11 Total number of boys = (11 + 5) = 16 Total number of students = (11 + 16) = 27 Required Probability = (11C2 × 16C2)/ 27C4 => (11 × 4)/117 = 44/117
When will the first CBSE Class 10 board exam be conducted under the new two-exam system starting 2026?
In collaboration with UN Women, which Indian state's tourism department has launched a Women-Friendly Tourism initiative to empower women in the tourism...
When is World Tsunami Awareness Day observed in November?
In which state India's first semiconductor facility will be set up by the Vedanta - Foxconn JV?
Where are the headquarters of the International Energy Agency?
Which mutual fund house has renamed US Debt ETF Fund As US Treasury Bond 0-1 Year Fund Of Fund?
In which city is the headquarters of the newly established National Turmeric Board located?
These two temples Lord Jagannath Temple and Lingaraja Temple are located in which of the following states?
How much did Deutsche Bank’s recent (Nov 2024) capital infusion aim to benefit its India operations?
Who has recently become the elected President of Maldives?
