A magician performing a magic act has asked for 2 volunteers from the audience to help with his routine. If there are 250 people
2 answers:
Solution:
Number of people in the audience = 250
Number of Volunteers to be chosen from 250 volunteers = 2
As this can be done by choosing 2 people out of 250 peoples , the order is not important.
So , we will use combinatorics for this method, because order does not matter here.
So Possible combination=
=
= 31125 ways
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Answer:
For x∈ {-∞,-3} y<0, below x-axis
x∈ {-3,-1} y>0, above x-axis
x∈ {-1,4} y<0, below x-axis
x∈ {4,∞} y>0, above x-axis
Step-by-step explanation:
f(x)=
=0
For x∈ {-∞,-3} y<0, below x-axis
x∈ {-3,-1} y>0, above x-axis
x∈ {-1,4} y<0, below x-axis
x∈ {4,∞} y>0, above x-axis