Brain Teasers & Puzzles
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Look at this series: 12, 11, 13, 12, 14, 13, … What number should come next?
A. 10
B. 16
C. 13
D. 15
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A train leaves New York City for Alle City at 15 mph. At the very same time, a train leaves Alle City for New York City at 20 mph on the same track. At the same moment, a bird leaves the New York City train station and flies towards the Alle City train station at 25 mph. When the bird reaches the train from Alle City, it immediately reverses direction. It then continues to fly at the same speed towards the train from New York City, when it reverses its direction again, and so forth. The bird continues to do this until the trains collide. How far would the bird have travelled in the meantime ?
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Three people are in a room. Ronni looks at Nile. Niile looks at Senthil. Ronni is married but Senthil is not married. At any point, is a married person looking at an unmarried person? Yes, No or Cannot be determined.
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There is a bag with 20 black and 13 red balls. Your task is to pick two balls in succession. If the balls are the same colour then you remove them and replace them with a black ball. If the balls are of different colour then you remove them and replace them with a red ball. What is the colour of the last ball ?
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There are two Jars with 50 balls each black and white mix in colour. You have to pick a random ball from a random bowl. How do you maximise the probability of getting a black ball ?
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