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The Doubling Sequence
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The Doubling Sequence
$ 0Long ago in India, there lived a raja who believed that he was wise and fair. But every year he kept nearly all of the people’s rice for himself. Then when famine came, the raja refused to share the rice, and the people went hungry.
Then a village girl named Rani devises a clever plan. She does a good deed for the raja, and in return the raja lets her choose her reward. Rani asks for just one grain of rice, doubled every day for thirty days. Through the surprising power of doubling, one grain of rice grows into more than one billion grains of rice.
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Story Lesson in binary numbers & having double careers!
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Story Lesson in binary numbers & having double careers!
$ 0The story is set in ancient India and follows a boy named Bhagat who wants to bring his family out of poverty by winning a place in the rajah’s court as a singer.
As it turns out, when it’s time for Bhagat to find a place to stay in the city, he is faced with a mathematical puzzle. He must pay the innkeeper one ring per night in advance, and it costs one coin to break one link in his chain of seven. But Bhagat only has a single coin, and he doesn’t know how many nights he will need to stay. How can Bhagat find a way to divide the chain of seven rings in order to pay one ring per night and avoid overpaying?
His inventive solution offers readers a friendly lesson in binary numbers–the root of all computing.
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Estimates
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Estimates
$ 0If someone handed you a big bowl of jelly beans, how would you figure out how many there are? You could count them, one by one―or you could estimate. Do you see more than five jelly beans? Less than a million?
We use estimation in Math when the exact answer to a problem is not required. The said problem can be resolved with an approximately realistic value. Estimating also helps us get the answer to a calculation faster.
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How do you weigh an Elephant?
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How do you weigh an Elephant?
$ 0Where has everybody gone? Oh! They are busy finding out the weight of King’s favourite elephant! Wondering how this will be done? Join Leelavati as she solves this maths mystery for you!
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