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Let a(n) denote the number of all n-digi...

Let `a_(n)` denote the number of all n-digit numbers formed by the digits 0,1 or both such that no consecutive digits in them are 0. Let `b_(n)` be the number of such n-digit integers ending with digit 1 and let `c_(n)` be the number of such n-digit integers ending with digit 0. Which of the following is correct ?

A

7

B

8

C

9

D

11

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Verified by Experts

The correct Answer is:
B
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