27 fast Q 27 In a hurdle race, a player has to cross 8 hurdles The probability that - Maths - Probability

Question

27 fast
Q 27 In a hurdle race, a player has to cross 8 hurdles The
probability that he will clear a hurdle is 4 5 , what is the
probability that he will knock down in fewer than 2 hurdles?

Lovina Kansal · Accepted Answer

Dear student
Total number of hurdles is 8
  Probability of clearing each hurdle is 45So probability of knocking a hurdle is 1-45=15  So probability that he will knock down fewer than 2 hurdle=Pknocking 0 hurdle+P(knocking 1 hurdle)=8C0150458+8C1151457=458+8151457=45745+815=457125=3458
Regards

27 fast Q.27. In a hurdle race, a player has to cross 8 hurdles. The probability that he will clear a hurdle is 4 5 , what is the probability that he will knock down in fewer than 2 hurdles?

27 fast
Q.27. In a hurdle race, a player has to cross 8 hurdles. The probability that he will clear a hurdle is $\frac{4}{5}$ , what is the probability that he will knock down in fewer than 2 hurdles?