SSC CPO 9th Nov 2022 Shift 3

The given pie chart shows the percentage of students who speak different languages in a hostel.
The total number of students in the hostel is 120.

What is the ratio of students speak English and Bhojpuri to those who speak Tamil?

If $$16^{2} - k = \left(4y+\frac{3}{2}\right) \left(4y-\frac{3}{2}\right)$$, then the value of k is:

The following pie chart shows the number of workers of different categories A, B, C, D, E, F, G and H of a factory in 1995.

If the number of workers in category B is increased by 10% and the number of workers in category D is decreased by 5% in 1996, then what is the total no. of workers in categories B and D in 1996, if no. of workers in B was 1500 in the year 1995?

The radius of a hollow sphere is 21 cm. It is cut into two equal halves by a plane passing through its centre. What is 75% of the curved surface area (in $$cm^{2}$$,rounded off to the nearest tens) of the hemisphere? (take $$ \pi = \frac{22}{7}$$)

In an election between two candidates, 65% of the voters cast their votes, out of which 3% of the votes were decided to be invalid. A candidate got 81965 votes which are 65% of the total valid votes. What is the total number of votes enrolled in that election?

Amit & Sumit start walking from same point in opposite directions at the speed of 6 km/h and 4 km/h, respectively. How far will they be from each other after 4 hours?

A man goes from place A to B at a speed of 12 km/h and returns from B to A at a speed of 18 km/h. His average speed for the entire journey is:

Study the following table and answer the question.

Percentage of marks obtained by five students in different subjects.
What are the average marks in percentage obtained by Mohan?

Total number of candidates who appeared and qualified in a competitive examination from different cities are given in the following bar graph. Study the bar graph carefully and answer the following question.

What is the difference between the average number of appeared candidates and the average number of qualified candidates in the exam from all the cities?

A wrist watch is sold for ₹1,200 at a profit per cent equal to its cost price. Find the cost price of the wrist watch.