During exams meena studies for 30 hours, Rajesh studies for 42 hones & peruya studies for 54 hours in a day. If all the three study English for the same duration, what is the max. time spent by all the there in studying English?

Rajesh studies for 6 hours in a day, of hich he spends 60% time on Mathematics and 40% time on Physics. Find out how much time he spends studying thw two subjects.

Ashish studies for 4 hours, 5 hours and 3 hours respectively on three consecutive days. How many hours does he study daily on an average?

Ashish studies for 4 hours, 5 hours and 3 hours respectively on three consecutive days. How many hours does he study daily on an average?

Ashish studies for 4 hours,5 hours and 3 hours respectively on three consecutive days. How many hours does he study daily on an average?

Ashish studies for 4 hours, 5 hours and 3 hours respectively on threeconsecutive days. How many hours does he study daily on an average?

Study the following table carefully and answer the questions given below. What are the average marks obtained by all the students together in English?

Draw the Vennn diagrems to illustrate the following relationship among the sets E,M and U , where E is the set of students studying English in a school , M is the set of students studying Mathematics in the same scholl , U is the set of all students in that school . (i) All the students who study Mathematics study English , but some students who study English do not study Matchematics . (ii) There is not students who studies both Mathematics and English. (iii) Some of the students study Mathematics but do not study English , some study English but do not study Mathematics , and some study both . (iv) Not all students study Matchematics , but every student studyin English studies Mathematics.

Read the data given below and answer the questions based on it. In the CBSE Board exams last year, 53% passed in Biology, 61% passed in English, 60% in Social Studies, 24% in Biology and English, 35% in English and Social studies, 27% in Biology and Social Studies, and 7% in none. What is the ratio of percentage of students who passed in Biology and Social Studies but not English in relation to the percentage of Students who passed in Social Studies and English but not Biology?

A JEE aspirant estimates that she will be successful with an 80% chance if she studies 10 hours per day, with 60% chance if she studies 7 hourse per day, and with a 40% chance if she studies 4 hours per day. She further believes that she will study 10 houers, 7 hours, and 4 hours per day with probabilities 0.1,0.2and 0.7, respectively. The chance she will be successful if she studies for 4hours is