JEE 2021 | सांतत्य तथा अवकलनीयता - L7 | Class 12 गणित | Hindi Medium | Amar Sir | 8 PM

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Acids,Bases and pH - Class 10 Science | 7 PM Master Class By Vipin Sir

JEE Mains & Advanced | Chemistry - Ideal Gases By Vipin Sir | L3 English Medium

JEE Mains & Advanced | Chemistry - Ideal Gases By Vipin Sir | L4 English Medium

JEE Mains & Advanced | Chemistry - Ideal Gases By Vipin Sir | L1 English Medium

JEE Mains & Advanced | Chemistry - Ideal Gases By Vipin Sir | L2 English Medium

There are twelve friends A, B, C, D, E, F, G, H, I, J, K and L who invested money in some business in the ratio of 1 : 2 : 3 : 4: 5 : 6 : 7 : 8 : 9 : 10 : 11 : 12 and the duration for which they invested the money is in the ratio of 12 : 11 : 10 : 9 : 8 : 7 : 6 : 5 : 4 : 3 : 2 : 1 respectively. Who will get the maximum profit at the end of the year ?

The marks obtained by 40 students of class IX in an examination are given below: 18, 8, 12, 6, 8, 16, 12, 5, 23, 2, 16, 23, 2, 10, 20, 12, 9, 7, 6, 5, 3, 5, 13, 21, 13, 15, 20, 24, 1, 7, 21, 16, 13, 18, 23, 7, 3, 18, 17, 16 Present the data in the form of a frequency distribution using the same class size, one such class being 15-20 (where 20 is not included)

Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows: 1 6 2 3 5 12 5 8 4 8 10 3 4 12 2 8 15 1 17 6 3 2 8 5 9 6 8 7 14 12 (i) Make a grouped frequency distribution table for this data, taking class width 5 and one of the class intervals as 5 - 10. (ii) How many children watched television for 15 or more hours a week?