While tossing a coin we may get two set of values "Head" or"Tail" .This set of values is called
In a set of 10 coins, 2 coins are with heads on both the sides. A coin is selected at random from this set and tossed five times. If all the five times, the result was heads, find the probability that the selected coin had heads on both the sides.
OR
How many times must a fair coin be tossed so that the probability of getting at least one head is more than 80%?
Two coins are tossed 400 times and we get
two heads:112 limes; one head: 160 times; 0 head: 128 limes.
When two coins are tossed at random, what is the prohability of getting
(i) 2 heads? (ii) 1 head? (iii) 0 head?