Friday, January 15, 2010

IIT JEE Mathematics Final Problem Revision Set 18

1. The probability of Team A winning a match against Team B is 1/2. Assuming independence from match to match the probability that in a 5 match series, Team A's second win occurs at the third match is

a. 1/8
b. 1/4
c. 1/2
d. 2/3

2. If p,q,r are non-coplanar unit vectors such that p×(q×r) = (q+r) /√(2), then the angle between p and q is

a. 3π/4
b. π/4
c. π/2
d/ π

3. The vector (1/3)[2i - 2j +k] is

a. unit vector
b. makes an angle π/3 with the vector [2i-4j+3k]
c. parallel to the vector [-i+j- 0.5k]
d. perpendicular to the vector [3i+2j-2k]

1 comment:

Nikhil said...

u have posted the revision sets but answer key and solution set is not appearing on blog . send link to view answers -Nikhilpatil