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# A variable name in certain computer language must be either a alphabet or a alphabet followed by a decimal digit.Total number of different variable names that can exist in that language is equal to

$\begin{array}{1 1}(A)\;280\\(B)\;290\\(C)\;286\\(D)\;296\end{array}$

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## 1 Answer

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Total variables if only alphabet is used =26
Total variables if alphabets and digits both are used =$26\times 10$
$\Rightarrow 260$
Total variables =$26(1+10)$
$\Rightarrow 26(11)$
$\Rightarrow 286$
Hence (C) is the correct answer.
answered May 19, 2014

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