SSC CPO 16th-March-2019-Shift-1

ABCD is a cyclic quadrilateral such that AB is a diameter of the circle circumscribing it and angle ADC = $$142^\circ$$. Then angle BAC is equal to:

One tap can fill a tank in 3 hours and a leak can empty the tank in 5 hours. If the tap and the leak (which was half closed) were left open. how long will it take for the tank to fill?

$$\frac{64}{25}$$ converted to percentage is:

Pipe A can fill a cistern in 4 hours and another pipe B is installed. Both the pipes together fill the cistern in $$2\frac{1}{2}$$ hours. How long will it take for B alone to fill the cistern?

If the cost price of 4 chairs is equal to selling price of 3 chairs, then the profit or loss percentage is:

A, B and C start walking together from a point. Their steps measure 42 cm, 56 cm and 64 cm respectively. What is the minimum distance they should walk so that each takes exact number of steps?

The students of a class donated ₹3,481 towards relief fund. Each student donated an amount equal to the number of students in the class. The number of students in the class is:

The average of all prime numbers between 21 and 50 is(round off to one decimal number):

The area of a parallelogram is 338 m$$^2$$. If its altitude is twice the corresponding base, its base is:

A bouglt 38 kg rice @ ₹54.50/kg, 45 kg rice @ ₹62/kg and 55 kg rice @ ₹48/kg. He sold the mixture @ ₹65/kg. His profit or loss percentage is: