BTGmoderatorDC wrote:What is the probability of getting only 1 head in a single throw of three fair coins?
A) 1/2
B) 3/8
C) 1/4
D) 1/5
E) 5/8
P(HTT) = 1/2 * 1/2 * 1/2 = 1/8.
Since a good outcome will be yielded if H is first, second or third, we multiply by 3:
1/8 * 3 = 3/8.
The correct answer is
B.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.
As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.
For more information, please email me (Mitch Hunt) at
[email protected].
Student Review #1
Student Review #2
Student Review #3
