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4 red balls and 5 green balls are kept in a box. If 3 balls are choosen at random, what is the probability that at least one is green?
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Question 7 of 10
7. Question
1 points
Category: Quantitative Aptitude
A cubical cake of 8m*12m*16m is cut into exact number of equal cubical pieces. The least possible number of pieces will be?
Correct
Explanation
H.C.F of 8, 12, 16 =4
Least number of pieces = 8*12*16/4*4*4 = 24
Incorrect
Explanation
H.C.F of 8, 12, 16 =4
Least number of pieces = 8*12*16/4*4*4 = 24
Question 8 of 10
8. Question
1 points
Category: Quantitative Aptitude
Ayesha’s father was 38 years of age when she was born while her mother was 36 years old when her brother four years younger to her was born. What is the difference between the ages of her parents?
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Question 9 of 10
9. Question
1 points
Category: Quantitative Aptitude
A train leaves the station 1 hour before the scheduled time. The driver decreases its speed by 4km/hr. At the next station 120km away, the train reached on time. Find the original speed of the train.
Correct
Explanation
Distance = speed × time
120 = speed × time
They given, train moves one hour before and speed 4 km/hr slow, and it reaches on same time.
So let we take 5 × 24 = 120
6 × 20 = 120
Therefore the initial speed is 24 km/hr.
Incorrect
Explanation
Distance = speed × time
120 = speed × time
They given, train moves one hour before and speed 4 km/hr slow, and it reaches on same time.
So let we take 5 × 24 = 120
6 × 20 = 120
Therefore the initial speed is 24 km/hr.
Question 10 of 10
10. Question
1 points
Category: Quantitative Aptitude
6 litres are drawn from a cask full of wine and it is then filled with water. 6 litres of the mixture are drawn and the cask is again filled with water. The quantity of wine now left in the cask is to that of the water in it as 121: 23. How much does the cask hold?
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