A fish tank contains 14 goldfish 26 guppies. If you randomly select 2 fish what is the probility that they both are gold fish?
A.1/20
B. 1/26
C. 91/780
D. 1/384

Question

Savvy74 Savvy74

24-02-2016
Mathematics

contestada

A fish tank contains 14 goldfish 26 guppies. If you randomly select 2 fish what is the probility that they both are gold fish?
A.1/20
B. 1/26
C. 91/780
D. 1/384

Respuesta :

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taskmasters taskmasters · Answer 1 · 2016-03-03T17:04:51+01:00

The probability of selecting 2 goldfish from a fish tank is 91/780.

The probability of getting a goldfish from a first try is 14/40 because the total number of goldfish is 14 over the total number of fishes in the fish tank which is 40.
The probability of getting a goldfish on the second try is 13/39 because there are only 13 goldfish left over 39 total number of fishes left in the tank.
Then,
P(selecting 2 goldfish) = (14/40)(13/39) = 182/1560 = 91/780

A fish tank contains 14 goldfish 26 guppies. If you randomly select 2 fish what is the probility that they both are gold fish? A.1/20 B. 1/26 C. 91/780 D. 1/384

Respuesta :

Otras preguntas

A fish tank contains 14 goldfish 26 guppies. If you randomly select 2 fish what is the probility that they both are gold fish?
A.1/20
B. 1/26
C. 91/780
D. 1/384