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In a class of 10 girls and 20 boys, Jaya's rank is 4 among the girls and 18 in the class. What is Jaya's rank among the boys in the class? 1) Can't be determined 2) 16 3) 14 4) 15 5) None of these

The average age of 40 students of a class is 16 years. After admission of 10 new students to the class, the average becomes 15 years. If the average age of 5 new students is 11 years then average age (in years) of the remaining 5 new students is

The following table gives the number of boys of a particular age in a class of 40 students. Calculate the mean age of the students Age (in years): 15 16 17 18 19 20 No. of students: 3 8 10 10 5 4

Class 10 Maths (Hindi) | Chapter 5 समांतर श्रेढ़ियाँ | Important Questions and Quick Revision

The following data : 2, 5, 15, 25, 20, 12, 8, 7, 6, 16, 21,17, 30, 32, 23, 40, 51, 15, 2, 9, 57, 19, 25 is grouped in the classes 0 –5, 5 –10, 10 –15 etc. Find the frequency of the class 20 –25.

A clock is set right at 5am. The clok loss 16 min in 24 h. What will be the right time when the clock indicates 10 pm on the third day ?

In a class 80 students the boys and girls are in the ratio of 5 : 3. The students can speak only Hindi or Engish or both Hindi and English. The number of boys and the number of girls who can speak only Hindi is equal and each of them is 40% of the total number of girls. 10% of the girls can speak both the languages and 58% of the boys can speak only English What percentage of boys and girls can speak only Hindi?