Are you choosing one or two? "boy or girl" vs. "both of them"?
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.
Either-or probabilities are found by adding the individual probabilities.
in a primary school 70% of the
boys and 55% of the girls can ride
a bicycle. if a boy or a girl are
chosen at random, what is the
probability that both of them can
ride a bicycle?
6 answers
Tts wat I don't get coz th question is written lyk tt
"Tts wat I don't get coz th question is written lyk tt"
Donald -- please use standard English when you post here. This is an academic message board, staffed by literate people, many of whom are certified teachers.
Donald -- please use standard English when you post here. This is an academic message board, staffed by literate people, many of whom are certified teachers.
Ooops sorry can you now please work it out using the independent rule
The question isn't correct. It's not clear whether one or two children is chosen. Ask your teacher for clarification.
Ok thank you