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एक सिक्के को 10 बार उछाला जाता है। ठीक छः चित आने की प्रायिकता है

(A) \({ }^{10} C_{6}\left(\frac{1}{2}\right)^{6}\)

(B) \({ }^{10} C_{6}\left(\frac{1}{2}\right)^{7}\)

(C) \({ }^{10} C_{6}\left(\frac{1}{2}\right)^{8}\)

(D) \({ }^{10} C_{6}\left(\frac{1}{2}\right)^{10}\)

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सही विकल्प है (D) \({ }^{10} C_{6}\left(\frac{1}{2}\right)^{10}\)

यदि एक सिक्का उछाला जाता है तो चित या पट आने की प्रायिकता \(\frac 12\) होती है।

अब, यदि सिक्के को 10 बार उछाला जाता है तो ठीक 6 चित आने की प्रायिकता है,

\({ }^{10} C_{6} \times \left(\frac{1}{2}\right)^{6}\times \left(\frac{1}{2}\right)^{10 -6}\)

\(={ }^{10} C_{6} \times \left(\frac{1}{2}\right)^{6}\times \left(\frac{1}{2}\right)^{4}\)

\(={ }^{10} C_{6}\left(\frac{1}{2}\right)^{10}\)

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