A box contains 14 white balls and 6 black balls. Find the...
A box contains 14 white balls and 6 black balls. Find the probability of first drawing a black ball and then a white ball without replacement.
0.21
0.22
0.30
0.70
Correct answer is B
The probability of picking a black ball = 66+14=620
Probability of a white ball without replacement = 1419
Probability of a black ball and then white without replacement = 620×1419=2195=0.22
Given that r = (10 N , 200º) and n = (16 N , 020º), find (3r - 2n). ...
The sales of five salesgirls on a certain day are as follows; GH¢ 26.00, GH¢ 39....
Consider the statements: p : Musa is short q : Musa is brilliant Which of the following rep...
If the sum of the roots of 2x2 + 5mx + n = 0 is 5, find the value of m...
Find the coefficient of x2in the binomial expansion of (x+2x2)5...
Given that f(x)=2x2−3 and g(x)=x+1 where x∈R. Find g o f(x)....