1
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Two dice are thrown simultaneously. What is the probability that the sum of the numbers appearing on them is a prime number?
A
$${5 \over {12}}$$
B
$${1 \over {2}}$$
C
$${7 \over {12}}$$
D
$${2 \over {3}}$$
2
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
From a deck of cards, cards are taken out with replacement. What is the probability that the fourteenth card taken out is an ace?
A
$${1 \over {51}}$$
B
$${4 \over {51}}$$
C
$${1 \over {52}}$$
D
$${1 \over {13}}$$
3
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
IF A and B are two events such that P(A) = 0.5, P(B) = 0.6 and P(A $$\cap$$ B) = 0.4, then what is P($${\overline {A \cup B} }$$) equal to ?
A
0.9
B
0.7
C
0.5
D
0.3
4
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
A problem is given to three students A, B and C whose probabilities of solving the problem are $${1 \over 2},{3 \over 4}$$ and $${1 \over 4}$$ respectively. What is the probability that the problem will be solved if they all solve the problem independently?
A
$${{29} \over {32}}$$
B
$${{27} \over {32}}$$
C
$${{25} \over {32}}$$
D
$${{23} \over {32}}$$
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