सांख्यिकी | Class 9 NCERT गणित | 5 PM Class By Kamal Sir | L14 | Hindi Medium

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

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

In a class of 50 students, 25 take Bengali, 16 take Hindi, 12 students take no language. How many take both Bengali and Hindi? (a) 3 (b) 4 (c) 9 (d) 13

NEET 2020 - Revision In 60 Days | NCERT Class 11 Chapter 5 Morphology of Flowering Plant | NEET Biology Revision

In a class of 60, where girls are twice that of boys, Kamal ranked seventeenth from the top. If there are 9 girls ahead of Kamal, how many boys are after him in rank?

The probability that a student selected at random from a class will pass in Hindi is 4/5 and the probability that he passes in Hindi and English is 1/2 . What is the probability that he will pass in English if it is known that he has passed in Hindi ?

The average age of 60 boys in a class was calculated as 12 years. It was later realised that the actual age of one of the boys in the class was 12.5 years but it was calculated as 14 years. What is the actual average age of the boys in the class ?

In a class, there were 9 boys and some girls. In a test the mean score obtained by the boys was 12 while that obtained by the girls was 14. If the overall average was 13.1, what was the total number of students in the class?

In a class there were 9 boys and some girls. In a test the mean score obtained by the boys was 13 while that obtaind by the girls was 15. If the overall average was 14.28 what was the total number of students in the class?