What is the probability that i) none of the 3 is included? Ii) 2 of the 3 are include
50. A box contains balls numbered 1,2,3, ... .n. A ball is drawn at random. What is
probability that its label number is divisible by 3 or 4?
51 Thinning tilretame
d
u
r
inn
1
TT 71
Answers
12/25 is probability that its label number is divisible by 3 or 4
Step-by-step explanation:
i) none of the 3 is included? Ii) 2 of the 3 are include
there are three
Probability of including 1 = 1/3 = p
q = not including = 2/3
none of 3 is included = 0 included
Probability 0 of 3 included = ³C₀p⁰q³ = 1 (1/3)⁰ (2/3)³ = 8/27
1 of 3 included = ³C₁p¹q² = 12/27
2 of the 3 are included = ³C₂p²q¹ = 3 * (1/3)² (2/3) = 6/27
3 of the 3 are included = ³C₃p³q⁰ = 1 * (1/3)³ (2/3)⁰ = 1/27
Divisible by 3 from 1 to 50
are 16 numbers
Divisible by 4 from 1 to 50
are 12 numbers
Divisible by 12 from 1 to 50
are 4 numbers
16 + 12 - 4 = 24 numbers divisible by 3 or 4
Probability = 24/50 = 12/25
Learn more:
a pair of dice thrown. find the probability of getting a sum of 10 or ...
https://brainly.in/question/7850369
If you flip three fair coins, what is the probability that you'll get all ...
https://brainly.in/question/7633345