

MCQOPTIONS
Saved Bookmarks
1. |
A fair coin it tossed 2n times. The probability of getting as many heads in the first n tosses as in the last n is |
A. | \[\frac{^{2n}{{C}_{n}}}{{{2}^{2n}}}\] |
B. | \[\frac{^{2n}{{C}_{n-1}}}{{{2}^{n}}}\] |
C. | \[\frac{n}{{{2}^{2n}}}\] |
D. | None |
Answer» B. \[\frac{^{2n}{{C}_{n-1}}}{{{2}^{n}}}\] | |