Question

Apair of coins is tossed 100 times and the results are: Two tails-27 times,one tail -51 times. Find the probability of getting no tail.​

Answer 1

Answer:

Since the coin is tossed 100 times, the total number of trials is 100.  

Let us call the events of getting a head and of getting a tail as X and Y, respectively. Then, the number of times X happens, i.e., the number of times a head come up, is 20.

$P(X)= \frac{Total space number space of space trials}{Number space of space heads}$

$=\frac{20}{100} =\frac{1}{5}=0.2$

Answer 2

Answer is 7/25
No. Of trails in which no tails appeared was 28
So probability would be 28/100
If you simplify you will get 7/25


Hope it helps....... :)