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Let a(n) denotes the number of all n-dig...

Let `a_(n)` denotes the number of all n-digits positive integer formed by the digits 0,1 or both such that no consecutive diigits in them are 0. let `b_(n)` be the number of such n-digit integers ending with digit 1 and `c_(n)` be the number of such n digits integers ending with digit 0.
Q. The value of `b_(6)`, is

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