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A binary sequence is an array of '0'...

A binary sequence is an array of '0' s and 1's . The number of n- digit binary sequences which contain even number of 0 s is :

A

`2^(n-1)`

B

`2^n -1`

C

`2^(n-1) -1`

D

`2^n`

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The correct Answer is:
A
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DIPTI PUBLICATION ( AP EAMET)-PERMUTATIONS & COMBINATIONS-EXERCISE 1A (PERMUTATIONS )
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