प्रकाश - परावर्तन तथा अपवर्तन | Class - 10 विज्ञान | 5 PM Class by Amba Ma'am | L20 Hindi Medium

12 PM Special Class | Class 11 - STRUCTURE OF ATOM || BOHR MODEL By Yakshu Ma'am

(i)Find the class mark of the class 90-120. (ii)In a frequency distribution, the mid-value of the class is 10 and width of the class is 6. Find the lowe limit of the class. (iii)The width of each of the five continuous classes in a frequency distribution is 5 and lowe class limit of the lowest class is 10. What is the upper class limit of the highest class? (iv) The class marks of a frequency distribution are 15,20,25...... Find the class corresponding to the class mark 20. (v)In the class intervals 10-20, 20-30, find the class in which 20 is included.

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

If the median of the distribution given below is 28.5, find the value of x and y . Class interval: 0-10 10-20 20-30 30-40 40-50 50-60 No. of students: 5 x 20 15 y 5

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.

In a History examination,the average for the entire class was 80 marks.If 10% of the students scored 95 marks and 20% scored 90 marks,what was the average marks of the remaining students of the class? 65.5 b.72.5 c.75 d.85

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?

CBSE Class 10 Hindi Most Important Questions | 5 Mark Most Expected Questions | CBSE Board 2020

There are 30 students in a class .The average age of the first 10 students is 12.5 years .The average age of the remaining 20 students is 13.1 years .What is the average age (in years ) of the students of the whole class ?