Question

In an experiment, 100 drawing pins were dropped on a floor. 73 landed point up and the rest landed point down. A pin is selected at random and dropped. What is the probability that the pin will land point down?

• A. $0.73$
• B. $0.27$
• C. $0.37$
• D. $0.72$

Answer 1

The correct option is B $0.27$

Here we have total pins $=100$

No. of pins that landed pointed up$=73$

S, no. of pins that landed pointed down would be $100-73=27$

P(the pin selected and dropped would be pointed down)$=$ No. of pins that landed point down$/$Total no. of pins

$\therefore$ Probability $=\frac{27}{100}=0.27$

Thus probability that the pin will land point down$=0.27$