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The probability that a person visiting a zoo will see the giraffe is 0.72, the probability that he will see the bears is 0.84, and the probability that he will see both is 0.52.

0 3 Views | Posted 2 months ago
Asked by Shiksha User

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    Answered by

    Payal Gupta | Contributor-Level 10

    2 months ago

    This is a Fill in the blanks Type Questions as classified in NCERT Exemplar

    G i v e n     t h a t :                                                                   P ( t o     s e e     g i r a f f e e ) = 0 . 7 2                                                                               P ( t o     s e e     b e a r ) = 0 . 8 4 P ( t o     s e e     b o t h     g i r a f f e e     a n d     b e a r ) = 0 . 5 2 ∴                         P ( t o     s e e     g i r a f f e e     o r     b e a r ) = P ( t o     s e e     g i r a f f e e ) + P ( t o     s e e     b e a r ) − P ( t o     s e e     b o t h )                                                                                                                                                   = 0 . 7 2 + 0 . 8 4 − 0 . 5 2                                                                                                                                                   = 1 . 0 4     w h i c h     i s     n o t     p o s s i b l e . H e n c e ,     t h e     g i v e n     s t a t e m e n t     i s     ' F a l s e ' .

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