RRB Group-D 28th Sep 2018-shift -1
Instructions
For the following questions answer them individually
Question 1
An object travels 10 m in 4 s and then another 14 m in 2 s. What is the average speed of the object?
Question 4
What is the sum of the reciprocals of the values of zeroes of the polynomial $$6x^2 + 3x^2 - 5x + 1 ?$$
Question 7
315 marbles are distributed among Aman, Ashok and Alok in the ratio 7 : 3 : 5, respectively. How many more marbles did Aman get compared to Ashok?
Question 9
One of the two inlet pipes works twice as efficiently as the other. The two, working alongside a drain pipe that can empty a cistern all by itself in 12 hours, can fill the empty cistern in 12 hours. How many hours will the less efficient inlet pipe take to fill the empty cistern by itself?
