Quiz on Maths & Reasoning_WBCS_20-10-2022

In a certain code language, 'STREAM' is coded as 161418445228. How will 'PERIOD' be coded in that language?

If two trains A and B start at the same time in opposite directions from two stations and arrive at their destinations 4 hours and 9 hours, respectively, after crossing each other, what is the ratio of the speed of train A to that of train B?

If 'white' is called 'bird', 'bird' is called 'mercury', 'mercury' is called 'curd', 'curd' is called 'detergent' and 'detergent' is called 'white', then which of the following is used in 'thermometers'?

In a class of 45 students, all students participate in one or both of the two games, i.e. Chess and Badminton. 11 students participate in both the games, whereas 17 students participate only in Chess. How many total students participate in Badminton?