Answer:

Step-by-step explanation:
3 envelopes having 2 red card
2 envelopes having 1 red card and 1 black card
1 envelope having 2 black cards
We are given that . An envelope is selected at random and a card is withdrawn and found to be red.
So, No. of ways of envelope having red card = 3+2 = 5
No. of required ways of envelope having 1 red card and 1 black card = 2
So, probability of getting an envelope having 1 red card and 1 black card = 
Hence The chance the other card is black is 
Answer:
2,2,3,4,5
Step-by-step explanation:
Just show how to get the mean, median, mode, and range to justify the answer
Also hey Brailen
Answer:
4
Step-by-step explanation:
12n - 2n = 10n
10n = 40
40 divided by 10 = 4
n = 4