Officer (Freedom Fighter) 2019[MCQ]

16. The sum of squares of two numbers is 80 and the square of difference between the two numbers is 36. Find the product of two numbers.

[Officer (Freedom Fighter) 2019[MCQ] : 2019]

1. 11

2. 22

3. 33

4. 26

Answer

17. A student loses 1 mark for every wrong answer and scores 2 marks for every correct answer. If he answers all the 60 questions in an exam and score 39 marks, how many of them were correct?

[Officer (Freedom Fighter) 2019[MCQ] : 2019]

1. 27

2. 31

3. 33

4. 37

Answer

18. There are two stations of length 162 meters and 120 meters respectively. A train takes 15 seconds to pass first station and 18 seconds to pass another station. Determine the length of the train?

[Officer (Freedom Fighter) 2019[MCQ] : 2019]

1. 90 m

2. 70 m

3. 100 m

4. 95 m

Answer

19. A man rows a certain distance along the stream and against the stream in 1 hour and 1.5 hours respectively. If the velocity of the current is 3 km/hr, what is the speed of a man in still water?

[Officer (Freedom Fighter) 2019[MCQ] : 2019]

1. 12 km/hr

2. 13 km/hr

3. 11 km/hr

4. 15 km/hr

Answer

20. A milkman pays Tk. 6.40 per liter of milk. He adds water and sells the mixture at Tk. 8 per liter. By doing this, he makes 37.5% profit. Find the proportion of water to milk received by the customers?

[Officer (Freedom Fighter) 2019[MCQ] : 2019]

1. 1:12

2. 1:10

3. 1:15

4. 1:20

Answer

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