Q9 of 128 Page 13

Two coins are tossed simultaneously. What is the probability of getting at least one head?

Total numbers of elementary events are 2+ 2 = 4

Let E be the event of getting at least two heads


The favorable outcomes are: HH, HT, TH


Total numbers of favorable outcomes are 3


P (ATLEAST one head) = P (E) = 3/4


Note: at least one head means the outcome with one head or more will be considered favorable and the outcome with no head at all will be ruled out.


More from this chapter

All 128 →
7

If E denote the complement or negation of an even E, what is the value of ?

8

One card is drawn at random from a well shuffled deck of 52 cards. What is the probability of getting an ace?

 10

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn bears a number which is a multiple of 3?

 11

From a well shuffled pack of cards, a card is drawn at random. Find the probability of getting a black queen.