18 hour study|1 mahine me Kaise padhai kren

#StudentTalk - Jaaniye kaise kiye Dipen ne apne padhai ke sabhi Doubts solve Doubtnut ke saath! :D

If an aeroplane is scheduled to take off at 18 hours -57 minutes, then time in PM on a 12-hour clock is___________

Ashish studies for 4 hours,5 hours and 3 hours respectively on three consecutive days. How many hours does he study daily on an average?

During exams meena studies for 30 hours, Rajesh studies for 42 hones & peruya studies for 54 hours in a day. If all the three study English for the same duration, what is the max. time spent by all the there in studying English?

If a man goes 18 km downstream in 4 hours and returns against the stream in 12 hours then the speed of the stream in km/hr is a. 1 b. 3 c. 1.5 d. 1.75

A car covers a distance of 108.9 km in 1.8 hours. What is the average speed of the car?

Let 'X' denote the number of hours you study during a randomly selected school day. The probability that 'X' can take the values of x has the following form, where k is some unknown constant. P(X=x)={{:(0.1",","if",x=0),(kx",","if",x=1" or "2),(k(5-x)",","if",x=3" or "4),(0",",,"otherwise.":} (a) Find the value of 'k'. (b) What is the probability that you study at least two hours ? Exactly two hours ? At most two hours ?