Unsolvable Puzzles

An old farmer died and left 17 cows to his three sons. In his will, the farmer stated that his oldest son should get 1/2, his middle son should get 1/3, and his youngest son should get 1/9 of all the cows. The sons, who did not want to end up with half cows, sat for days trying to figure out how many cows each of them should get.
One day, their relative came by to see how they were doing after their father’s death. The three sons told him their problem. After thinking for a while, the relative said: “I’ll be right back!” He went away, and when he came back, the three sons could divide the cows according to their father’s will, and in such a way, that each of them got a whole number of cows.
What was the relative’s solution?
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This is a popular probability puzzle in which you have to select the correct answer at random from the four options below.
Can you tell, whats the probability of choosing correct answer in this random manner.
1) 1/4
2) 1/2
3) 1
4) 1/4View SolutionSubmit Solution 1,527.9K views
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Mr Albert go to his office by metro.
However nearby metro station is quite far from his place and he used to drive his bike to metro station daily with an average speed of 60km/hr. One day at halfway point he relized that due to heavy traffic he got late having average speed of just 30km/hr.How fast he must drive for the rest of the way to catch the metro train ?
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