जीव जनन कैसे करते है | CLASS 10-जीवविज्ञान | 8 PM Class By Pooja Ma'am | L4 Hindi Medium

Class 11 के बाद क्या ? Class 12 Hindi Medium की पढ़ाई साल के शुरू से कैसे करें ?

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

Ratio of the fares of First ,Second and Third class catogory of a train , between two stations is 10:7:2 and the ratio of passenger travelling in these category is 4:9:17 respectively .If the fare is increased by 1/4 in First class , 1/8 in second class and decreased by 10% i Third Class and the ratio of number of passenger in the category remains same .If the total amount received of Rs. 60590 , then find the total amount received from thrid class category .

In a frequency distribution having class intervals 0-10, 10-20, 20-30 and 30-40, the respective frequencies are X, x + 8, x - 2 and x - 4 and the arithmetic mean of the distribution is 17.8 The median lies in which one of the following class intervals ?

The marks obtained (out of 20) by 30 students of a class in a test are as follows: 14, 16, 15, 11, 15, 14, 13, 16, 8, 10, 7, 11, 18, 15, 14, 19, 20, 7, 10, 13, 12, 14, 15, 13, 16, 17, 14, 11, 10, 20. Prepare a frequency distribution table for the above data using class intervals of equal width in which one class interval is 4-8 (excluding 8 and including 4).

Directions : Consider the following for the. next three (3) questions that follow : In a frequency distribution having class intervals 0-10, 10-20, 20-30 and 30-40, the respective frequencies are X, x + 8, x - 2 and x - 4 and the arithmetic mean of the distribution is 17.8 The modal class is-