Show that n²-n-90=0

Oct 17th, 2015
Price: $5 USD

Question description

There are n sweets in a bag. Six of the sweets are orange. The rest of the sweets are yellow. Hannah takes a sweet from the bag. She eats the sweet. Hannah then takes at random another sweet from the bag. She eats the sweet. The probability that Hannah eats two orange sweets is 1/3. Show that n²-n-90=0.

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(Top Tutor) Daniel C.
School: Rice University

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Oct 17th, 2015
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