All India Engineering / Architecture Entrance Examination (AIEEE)
CBSE Guess > AIEEE > AIEEE Papers > 2007 > Mathematics
AIEEE 2007 Mathematics
Q. 17. Two aeroplanes I and II bomb a target in succession. The probabilities of I and II scoring a hit correctly are 0.3 and 0.2, respectively. The second plane will bomb only if the first misses the target. The probability that the target is hit by the second plane is
- 0.06
- 0.14
- 0.2
- 0.7
Sol:
No choice is correct
Q. 18. 
- divisible by neither x nor y
- divisible by both x and y
- divisible by x but not y
- divisible by y but not x
Sol:
Correct choice: (2)
Q. 19. For the hyperbola 
which of the following remains constant when α varies?
- Eccentricity
- Directrix
- Abscissae of vertices
- Abscissae of foci
Sol:
Correct choice: (4)