The number ofreal solutions of the equation is
1
2
3
4
C.
3
Given,
Now, if , then only one solution i.e. x = 0 is possible. Also, if cos x = x2, then two solutions. are possible. Hence, there are total 3 solutions.
The value of such that the system of equations 2x - y - 2z = 2; x - 2y + z = - 4; x + y + z = 4, has no solution, is
3
1
0
- 3
If the letters of the word 'PROBABILITY' are written down at random in a row, then probability that two B's are together, is
A fair coin is tossed-at a fixed number of times. If the probability of getting exactly 3 heads equals the probability of getting exactly 5 heads, then the probability of getting exactly one head is
1/64
1/32
1/16
1/8