1
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
What is the probability that an interior point in a circle is closer to the centre than to the circumference ?
A
$${1 \over 4}$$
B
$${1 \over 2}$$
C
$${3 \over 4}$$
D
It cannot be determined
2
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
If A and B are two events, then what is the probability of occurrence of either event A or event B ?
A
P(A) + P(B)
B
P(A $$\cup$$ B)
C
P(A $$\cap$$ B)
D
P(A) P(B)
3
NDA Mathematics 14th September 2025
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
In a sample survey of a village, the probability that a farmer is in debt is 0.60. What is the probability that three randomly selected farmers are all in debt (assume independence of events)?
1
 0.000216
2
0.064
3
0.216
4
0.512
4
NDA Mathematics 14th September 2025
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
The probability that a family owns a laptop is 0.68; that it also owns a desktop is 0.56. If the probability that it owns both is 0.48, then what is the probability that a randomly selected family owns a laptop or a desktop?
1
0.80
2
 0.76
3
0.36
4
 0.28