Directions (1-5): In following tabular chart, the percentage of marks in five different subjects obtained by 5 different students is given with their maximum marks in each subject respectively. Study the chart carefully and answer the questions that follows.
Note: Some data are missing. If require then find them first and then solve the given questions.
Q1. If average mark obtained by all the five students in English is 70 percent, then find the missing data in English
Q2. If marks obtained by Ram in History is 20% less than the mark obtained by Shyam in the same subject, then find the mark obtained by Ram in History
Q3. If Rekha obtained 10% less mark in Hindi than that of Shyam in the same subject, then find the average mark obtained by Rekha in all subjects(approximately)
Q4. If total marks obtained by Rinku in all the five subjects is 338 then find the mark obtained by Rinku in Science. (Use data for English obtained in Q1 to solve this question)
Q5. What is the marks obtained by Shyam in Math if marks obtained by Ram in Science is 20% less than that of marks obtained by Shyam in math?
Q6. A bag contains 4 black, 3 white and 8 blue color balls. If 4 balls are taken at random then the probability that all four balls are blue color ?
Q7. Three cards are drawn from pack of 52 cards. What is the probability that all are queens: (if replacement is required)
Q8. 7 people are to be seated in a circular table. If Ravi and Shyam do not sit with each other. how many possible ways are there to sit around the circular table ?
Total number of ways to sit in circular table = (7 – 1)! = 6!
Total number of ways when Ravi and Shyam do not sit with each other in circular table =
6! – 5! × 2
= 720 – 240
= 480
Q9. How many different words can be formed using the letters of the “QUESTION” such that words starts with T and ends with vowels ?
Total number of words = 1 × 6! × 4
= 720 × 4
= 2880
Q10. A wheel can cover 132 km in 3000 rotation. Find the radius of wheel ?