A person covers a certain distance by car, driving at the speed of 90 kmph and returns back to the starting point, riding on a bike at the speed of 60 kmph. What is his average speed for the whole journey?
Average speed = 2xy/(x+y) = (2 × 60 × 90)/(90+60) = 72 km / hr.
Which one of the following diagram represents the relationship between Sun, Moon, and Molecule?
How many people belong to only one group?
Find out the number of all those people who can speak both Malyalam and Tamil?
How many people belong to exactly two group?
Which of the following diagrams indicates the best relation between Oil, Wick and Lamp?
Select the Venn diagram that best represents the relationship between the following classes.
Star, Sun, Mercury
Sparrow , L eopard , Bird
How many badminton players are not hockey players?
