Question

क सिक्का को 6 बार उछाला जाता है तो 4 शीर्ष आने की प्रयिकिता है.
coin is tossed six times. The probability of getting 4 heads is..​

Answer 1

To begin with, we calculate the total number of possibilities that arise from tossing a coin 6 times . On each toss , we have 2 possibilities - a head or a tail. This gives us

2*2*2*2*2*2 = 64 possibilities

Now let's list out the desirable outcomes.

Having 4 heads

H H H H T T - This is one example of the above outcome. Something like

H H H T H T would also be equally likely and would be a desirable outcome. Thus to calculate all such permutations

6!/4!∗2!=15ways6!/4!∗2!=15ways

Here , 6 is the total number of objects while 2 and 4 are the total number of identical objects