Asked by Stelle
A 3-letter word is made from the word HAPPY. Find the probability that the word contains two letter P's.
Answers
Answered by
nile
order does not matter:so its a combination
ways to choose 3 out of 5 letter=
5C3=5!/(5-3)!3!=10 ways
ways to choose 2 letter p's:
2C2=1
for h=1
for a=1
for y=1
ans.= 1/10
ways to choose 3 out of 5 letter=
5C3=5!/(5-3)!3!=10 ways
ways to choose 2 letter p's:
2C2=1
for h=1
for a=1
for y=1
ans.= 1/10