In his ranch, Doug Bo can place a loop of rope, called a lasso, once in every 2 throws around a cow’s neck. What is the probability that he will be able to place a lasso around a cow’s neck at least once in 5 attempts? Choose one
A) 1/5  B) 15/32  C) 1/2  D) 31/32  E) 1
The probability of not placing a lasso around the cow's neck on 5 attempts is:   (1/2)(1/2)(1/2)(1/2)(1/2) = 1/32   The probability of placing a lasso around the cow's neck on 5 attempts is   1 - (1/32) = 31/32   correct answer option 31/32
<result>D</result>
In his ranch, Doug Bo can place a loop of rope, called a lasso, once in every 2 throws around a cow’s neck. What is the probability that he will be able to place a lasso around a cow’s neck at least once in 5 attempts?