In how many ways can 2 singers be selected from 4 who came to an audition?
a. 6
b. 2
c. 12
d. 4****
That would be 4C2 , four choose two,
or C(4,2) = 4!/(2!2!) = 6
thank you
WRONG!!!!!
4 is wrong.the answer is 6 100%
To determine the number of ways 2 singers can be selected from a group of 4, we can use the concept of combinations.
The formula to calculate combinations is given by:
nCr = n! / r!(n-r)!
Here, n represents the total number of singers (4 in this case), and r represents the number of singers to be selected (2 in this case).
Plugging in the values, we get:
4C2 = 4! / 2!(4-2)!
= 4! / 2!2!
= (4 * 3 * 2 * 1) / (2 * 1)(2 * 1)
= 24 / 4
= 6
Therefore, there are 6 ways to select 2 singers from a group of 4.
So, the correct answer is a. 6.