Multiple choice

A coin is tossed $1000$ times, if the probability of getting a tail is $3/8$, how many times head is obtained

  1. $525$
  2. $375$
  3. $625$
  4. $725$
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C Correct answer
Explanation

Probability of tail = 3/8. Probability of head = 1 - 3/8 = 5/8. Number of heads = 1000 * (5/8) = 125 * 5 = 625.

AI explanation

The total probability of all outcomes is 1, so the probability of getting a head is 1 minus the probability of getting a tail, or 1 minus 3/8, which equals 5/8. To find the expected number of heads, multiply this probability by the total number of tosses. Multiplying 5/8 by 1000 gives 625 heads.

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