Question
In grade 11 of a school, 40 students opted for Physics, 17 opted for Biology, and 20 opted for Chemistry. If the total number of students in grade 11 was 60, all of these students opted for at least one of the three subjects mentioned here, and exactly five of these students opted for all these three subjects, what is the probability that a randomly selected student of grade 11 of this school would have opted for exactly one of these three subjects?
More Previous year papers Questions
- The LCM of two numbers is 28 times their HCF, and the difference in the LCM and HCF is 405. If the numbers are in the ratio 4 : 7, then find the positive d...
- If the ratio of the heights of two cones is 1: 4 and the diameters are in ratio 4: 5 then what is the ratio of their volumes?
- A sphere has a radius of 8 cm. A solid cylinder has a base radius of 4 cm and a height of h cm. If the total surface area of the cylinder is half the surfa...
- 15 kg of ₹25 per kg wheat is mixed with 10 kg of another type of wheat to get a mixture costing ₹30 per kg. Find the price (per kg) of the costlier wheat.
- The marked price of an article is Rs 5000. But due to a special festive offer a certain percent of discount is declared. Mr. X availed this opportunity and...
- To do a certain work. the ratio of efficiencies of X and Y is 5 : 7. Working together, X and Y can complete the same work in 70 days. X alone started the w...
- An article is marked at ₹6,000 and is sold at a discount of 30%. The shopkeeper still makes a profit of 20%, a discount of 40% was given, what would be the...
- The difference between cost price and selling price is Rs. 264. If profit percentage is 33 percent, then what is the selling price?
- Sanjay and Amit can do a piece of work in 8 days. Amit alone can do it in 12 days. In how many days will Sanjay do it alone?
- How much is the average and track length (in km) of A, B, D during Y2 more or less than that of C in Y1 ?
Hey! Ask a query
Please enter email id
The email must be a valid email address.
Please enter Mobile Number
Please enter valid Mobile Number
Please enter your Doubt
Think You're Ready for RBI Grade B?
RBI Grade B 2026 Phase 1 Memory Based Paper
- 200 Questions with Detailed Solutions
- Section-wise Coverage (GA, English, Quant & Reasoning)