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There are 52 white keys and 36 black keys on a standard piano what is the probability that if the person did not look in hit the keyboard twice that

There are 52 white keys and 36 black keys on a standard piano what is the probability that if the person did not look in hit the keyboard twice that he or she would first hit a white key and then a black key



A. 169/484


B. 1/1872


C. 52/88


D. 117/484

Top Answer

2 comments
  • Yes I support 1/1872, since he or she did not look into twice. that means first time keyboard would be unlocked, in this way the correct choice is only 1 out 1872
    • chinnaistats
    • May 15, 2018 at 4:17am
  • Please consider required answer is 1/1872
    • chinnaistats
    • May 15, 2018 at 4:22am

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