Question

the probability of getting exactly 4 tails when 6 unbiased coins coins are tossed is?​

Answer 1

SOLUTION

TO DETERMINE

The probability of getting exactly 4 tails when 6 unbiased coins are tossed

EVALUATION

When 6 unbiased coins are tossed then the total number of possible outcomes

$= {2}^{6}$

$= 64$

Let A be the event that of getting exactly 4 tails

Then the total number of possible outcomes for the event A is

$\sf{ = {}^{6}C_4 }$

$= 15$

Hence the required probability

= P(A)

$\displaystyle \sf{ = \frac{15}{64} }$

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