Question

what is the probability of making 3 correct guesses in 5 true false answer type questions​

Answer 1

Answer:

5/16

Step-by-step explanation:

n= number of questions = 5

p= probability of getting correct = 1/2

q=  probability of getting wrong = 1/2

hence probability of getting three correct=

$5C_3\times(1/2)^3(1/2)^2$= 5/16

Answer 2

Answer:

ans n= number of questions = 5

p= probability of getting correct = 1/2

q=  probability of getting wrong = 1/2

hence probability of getting three correct=

5C_3\times(1/2)^3(1/2)^25C3×(1/2)3(1/2)2 = 5/16