There are lotuses growing in the mountain lake in Peru. Every day, each lotus is split in half, and instead of one lotus, two appear. The next day, each of the resulting lotuses is split in half, and so on. After 30 days, the lake was completely covered with lotuses. After how many days the half of the lake was covered with lotuses

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A: Solution

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A: Here we will going to use basic concept of Combination.

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A:

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A:

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A:

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A:

Q: In a group of dogs and their owners, there are exactly 20 heads and 64 legs.  How many dogs are in…

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A: A detailed solution is given below

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Q: If there are 5 logs in a pile of 30 that have sap on them, how many logs will have sap out of 360?

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Sequence and Series

A sequence is defined as a collection of things. Series is defined to sum the things one by one in the sequence.  It was invented by German mathematician Carl Friedrich Gauss.