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Certain number of children were playing a game of football. There was a trial taking place on the field. In this trial the probability that a goal is scored is 2/5. The probability that a girl hits a goal is 7/10 whereas the probability that a boy hits a goal is 1/5. What will be the probability that not only a goal is hit but it is also hit by a boy?

Certain number of children were playing a game of football. There was a trial taking place on the field. In this trial the probability that a goal is scored is 2/5. The probability that a girl hits a goal is 7/10 whereas the probability that a boy hits a goal is 1/5. What will be the probability that not only a goal is hit but it is also hit by a boy? Correct Answer 2/25

দেয়া আছে, একজন girl - এর goal করার সম্ভাব্যতা = 710 boy " " " " = 15 যেকোনো একজন দ্বারা " " " " = 25 ∴ আমরা জানি, দুটি event একসাথে ঘটার সম্ভাব্যতা হচ্ছে তাদের গুণফলের সমান। ∴ goal একজন ছেলে করবে এমন সম্ভব্যতা = 25×15 = 225

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