A basket contains 3 red and 1 white identical balls. A ba...
A basket contains 3 red and 1 white identical balls. A ball is drawn from the basket at random. Calculate the probability that it is either white or red.
\(\frac{1}{3}\)
\(\frac{1}{2}\)
\(\frac{3}{4}\)
1
Correct answer is D
P(white or red) = P(white) + P(red)
= \(\frac{3}{4} + \frac{1}{4}\)
= 1
The table shows the distribution of marks obtained by some students in a test Marks 0-9 10-...
The mean of 2, 5, (x + 2), 7 and 9 is 6. Find the median. ...
If \(^nC_2\) = 15, find the value of n...
Find the coordinates of the centre of the circle 3x\(^2\) + 3y\(^2\) - 6x + 9y - 5 = 0...
Find the stationary point of the curve \(y = 3x^{2} - 2x^{3}\)....
Simplify \(\frac{\sqrt{3}}{\sqrt{3} - 1} + \frac{\sqrt{3}}{\sqrt{3} +1}\)...