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Three unbiased coins are tossed, what is the probability of getting at least 2 tails ?

  • 1/3
  • 1/6
  • 1/2
  • 1/8
Similar Questions :

1. From a pack of 52 cards, 1 card is drawn at random. Find the probability of a face card drawn.

  • 3/13
  • 1/52
  • 1/4
  • None of above

2. A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random from this box. The probability that at least one of these is defective is

  • \begin{aligned} \frac{7}{19} \end{aligned}
  • \begin{aligned} \frac{6}{19} \end{aligned}
  • \begin{aligned} \frac{5}{19} \end{aligned}
  • \begin{aligned} \frac{4}{19} \end{aligned}

3. From a pack of 52 cards, two cards are drawn together, what is the probability that both the cards are kings

  • 2/121
  • 2/221
  • 1/221
  • 1/13

4. A box contains 5 green, 4 yellow and 3 white balls. Three balls are drawn at random. What is the probability that they are not of same colour.

  • 52/55
  • 3/55
  • 41/44
  • 3/44

5. A card is drawn from a pack of 52 cards. The probability of getting a queen of club or a king of heart is

  • 1/13
  • 2/13
  • 1/26
  • 1/52
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