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samdoesmath6473
15.01.2020 •
Mathematics
Compare 3 x 10^4 and 6 x 10^3
a) 3 x 10 ^4 is 5 times larger than 6 x 10 ^3
b) 3 x 10 ^4 is 4 times larger than 6 x 10 ^3
c) 6 x 10 ^3 is 5 times larger than 3 x 10 ^4
d) 6 x 10 ^3 is 4 times larger than 3 x 10 ^4
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Ответ:
Ответ:
Let’s count it.
I’m assuming that you have a regular deck of cards and that means 13 hearts and 13 kings.
You can pick any card of 52 with equal probability 1/52 for each.
So there are 52 opportunities of 1/52 probability to take any card from deck.
But you are looking only for 13 of hearts and for 13 of kings. That means your chance is (13 + 13) / 52 = 1/2 :)