प्रकाश - परावर्तन तथा अपवर्तन | Class - 10 विज्ञान | 5 PM Class by Amba Ma'am | L15 Hindi Medium

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

Find class widht of class 10.5 to 15.5

(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.

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 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.

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

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

Satish is 15 ranks above Sushil who ranks 28th in a class of 50. What is Satish's rank from the bottom? 1) 39 2) 37 3) 38 4) 35 5) None of these

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?