P = {p,l,u,s}
Q= {m,i,n,u,s}
R= {t,i,m,e,s}
How many elements are in ( P union Q) interjection (P union R)
I keep getting five.
Find the instantaneous rate of change of the reciprocal of a number with respect to the number when the number is 4.
The are a of a right isosceles triangle is 12.5cm^2. Its perimeter is:
A box contains circular poker chips that are congruent in shape but not color. There are red, blue, and white chips. Drew randomly draws out a chip. He gets 5 points if it is a blue chip, 1 point if it is a white chip, and he loses 3 points if it is a red chip. The probability of drawing out a red one is 25%, a blue one is 60%, and a white one is 15%. What is his mathematical expectation on any one draw?