For the following questions answer them individually
Using digits 5, 3, 2, 1 without repetition, how many four digit odd numbers can be made?
Using the digits 6,5,4,3,2,1 without repetition, how many three digit numbers can one make?
MA education students have to choose one pedagogy course from an option of three (Mathematics, Science and Language) and one thematic course from an option of two (Leadership, Social justice) along with the compulsory courses. How many different combinations of optional courses are possible?
If 6 people working 8 hours a day can finish a work in 12 days, how many days will it take for 4 people working 8 hours a day to finish the same work?
If 8 people work 8 hours a day and finish a work in 8 days, how long will it take to finish the work if 4 people work 4 hours a day?
If machine A needs 2 hours to finish a work, machine B 3 hours and machine C 6 hours to finish the same work, how long will it take for machines A, B and C to complete the work if they work simultaneously?
A and B working together finish a work in 6 hours. A can finish the work in 10 hours. How long will it take for B to finish the same work alone?
A car takes 25 minutes to travel from one point to another at an average speed of 40 km/hr. What is the approximate distance between the 2 points?
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