There are 8 boys and 4 girls in a lift. What is the proba...
There are 8 boys and 4 girls in a lift. What is the probability that the first person who steps out of the lift will be a boy?
\(\frac{1}{6}\)
\(\frac{1}{4}\)
\(\frac{2}{3}\)
\(\frac{1}{2}\)
Correct answer is C
Total number of people in the lift = 8 boys + 4 girls
= 12 people
probability that a boy comes out = \(\frac{8}{12}\) = \(\frac{2}{3}\)
Express the product of 0.00043 and 2000 in standard form. ...
Find the value of t in the diagram ...
Solve for x if \(25^{x} + 3(5^{x}) = 4\)...
The equation of the graph is ...
What is the loci of a distance 4cm from a given point P? ...
The solution to the simultaneous equations 3x + 5y = 4, 4x + 3y = 5 is...
In how many ways can a committee of 2 women and 3 men be chosen from 6 men and 5 women? ...