A die is thrown three times. Let X be ‘the number of twos seen’. Find the expectation of X. contexto.140 3 years ago Here, we have [Since, die is thrown times] And Therefore, the required expression is .
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![\[p\text{ }=\text{ }1/6,\text{ }q\text{ }=\text{ }5/6\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-cb1a235befee967b92ec2073cd9a95dd_l3.png "Rendered by QuickLaTeX.com")
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