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A Zoo keeper counted the heads of the animals in a zoo and found it to be 80. When he counted the legs of the animals he found it to be 260. If the zoo had either pigeons or horses, how many horses were there in the zoo ?

Created: 7 years ago | Updated: 1 week ago

Updated: 1 week ago

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Bangladesh Bank Bangladesh Bank - Assistant Director - 2009 গণিত সম্ভাব্যতা (Probability)

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প্রশ্ন: A Zoo keeper counted the heads of the animals in a zoo and found it to be 80. When he counted the legs of the animals he found it to be 260. If the zoo had either pigeons or horses, how many horses were there in the zoo ?

Let, No of horse = x

No of pigeons = 80 - x

4x + 2 ( 80 - x) = 260

2x = 260 - 160

2x = 100

x = 50

7 years ago

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A Zoo keeper counted the heads of the animals in a zoo and found it to be 80. When he counted the legs of the animals he found it to be 260. If the zoo had either pigeons or horses, how many horses were there in the zoo ?

প্রশ্ন: A Zoo keeper counted the heads of the animals in a zoo and found it to be 80. When he counted the legs of the animals he found it to be 260. If the zoo had either pigeons or horses, how many horses were there in the zoo ?

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