Question

Asked Nov 4, 2019

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How many different 16- bit strings contain exactly 4 1s?

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Step 1

**According to the given information the total number of bits in a string is 16.**

**It is needed to calculate the number of bits that should contain exactly 4 one’s.**

**So, n = 16 and r = 4**

So, the number of bits can be calculated by:

Step 2

The formula used to calculate above expression is:

Step 3

Now, use the formul...

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