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Q:

A 7 में से 5 बार सच बोलता है और B 9 में से 8 बार सच बोलता है। इसकी क्या प्रायिकता है कि वे एक ही तथ्य बताते हुए एक-दूसरे का खंडन करें?

  • 1
    $${1\over 7}$$
  • 2
    $${1\over 9}$$
  • 3
    $${1\over 4}$$
  • 4
    $${1\over 3}$$
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Answer : 4. "$${1\over 3}$$"

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