Question

A fair coin is tossed 100 times what is the probablity of getting tail on tossing odd number of times

Answer 1

It is still 50℅ or 1/2 as no. Of tossing of coin is 50 and on tossing probability is 1/2

Answer 2

Answer:

= $\frac{1}{2}$

Step-by-step explanation:

Clearly, total number of outcomes = 2¹⁰⁰ and number of favourable outcomes

       = ¹⁰⁰C₁ + ¹⁰⁰C₃ + ...... + ¹⁰⁰C₉₉= 2¹⁰⁰⁻¹

                                                   { ∵ nC₁ + nC₃ + nC₅ + ...... = 2^n⁻¹ }

   = 2⁹⁹

Hence, the probability = 2⁹⁹ / 2¹⁰⁰

         = $\frac{1}{2}$

GOOD LUCK !!