आठवीं कक्षा के 30 विद्यार्थियों के रक्त समूह ये है- A, B, O, O, AB, O, A, O, B, A, O, B, A, O, O,A,AB,O,A,A,O,O,AB,B,A,O,B,A,B,O कक्षा से यदृच्छया चुने गए एक विद्यार्थी का रक्त समूह AB होने की प्रायिकता ज्ञात कीजिए।
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Answer:
probability = favorable outcome divide total outcome
favourable outcome= no of AB=3
total outcome = no of all students given 30
probability = 3/30
=1divide10
=0.1
hope it helps
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