Respuesta :
Answer: 5C1/5!
Step-by-step explanation:
there are 5! Ways of arranging the envelope .
Then to get the probability that it is selected to match 5 letters with accuracy (5C1) is actually 5C1/5.
This law is from combination law with respect to the above probability question, as combination deals with selection, and helps in probability.
Answer:
Probability = Number of correct ways/ Number of total ways
Probability = 1/120
Probability = 0.0083
Step-by-step explanation:
Let L represents letters and E represents envelops
There are total 5 letters and 5 envelopes.
There is only one correct order of placing each letter into corresponding envelope.
L1 -> E1, L2 -> E2, L3 -> E3, L4 -> E4, L5 -> E5
What is the total number of ways this can be done?
Total number of ways = 5*4*3*2*1 = 120
So the probability function is
Probability = Number of correct ways/ Number of total ways
Probability = 1/120
Probability = 0.0083
