Math and Reasoning Questions
Q.No: 1
The diameter of a circle is 14 cm. What is the circumference?
- A. 12 cm
- B. 22 cm
- C. 44 cm
- D. 10 cm
Correct Ans: C. 44 cm
Q.No: 2
A and B are two alloys of tin and copper prepared by mixing metals in proportions 13:11 and 5:7 respectively. If equal quantities of two alloys are melted to form a 3rd alloy C, the proportion will be:
- A. 23:25
- B. 22:23
- C. 18:17
- D. 22:27
Correct Ans: A. 23:25
Q.No: 3
A vessel has 200ml solution of milk and water containing 25% milk. ‘a’ ml of milk was added to the vessel to reverse the ratio. ‘b’ ml of water was added to the vessel to reverse the ratio. Find the value of ‘b’:
- A. 1000 ml
- B. 1200 ml
- C. 1500 ml
- D. 1600 ml
Correct Ans: D. 1600 ml
Q.No: 4
If natural numbers are written from one after the other, with each digit taking up the same amount of space, the space taken up by the first n natural numbers is 6100/369% of the first 159 numbers. Find the value of n.
- A. 33
- B. 35
- C. 40
- D. 42
Correct Ans: B. 35
Q.No: 5
A boat goes 112 km downstream and comes back to the starting point in 11.5 hours. If the speed of the current is 9 km/h, then the speed (in km/h) of the boat in still water is:
- A. 17 km/h
- B. 19 km/h
- C. 29 km/h
- D. 23 km/h
Correct Ans: D. 23 km/h
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