SOLUTION: Four fair coins are tossed at once. If the outcomes are assumed independent, what is the probability that two heads and two tails are obtained?

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4 heads
4 tails
Each is 50/50 so being tails 50% of the time and heads 50% of the time.
50% + 50% = 100% tails that 2 of the 4
50% + 50% = 100% heads of 2 of the 4
with 4 coins tossed fairly there is 100% chance of 2 being heads and 100% chance of 2 being tails. 2/4 2/4 of each evenly.
2/4 tails 2/4 heads