Mathematics Quiz for NDA & Other Defence Exams: 14th March

Dear Students, Defence Adda is providing you all with this quiz on Mathematics questions for NDA, and other Defence Examinations. The questions asked in Mathematics Section of most of the defence examinations are based on the topics from Mathematics of Class 11th and 12th. The questions asked in this section are complex and comparatively difficult but once attempted with high accuracy, can fetch you full marks in this section. Also, practice on a daily basis helps one dive into the core concepts of a subject and thus, help her perform to the best of her ability in the real examinations. So, attempt the daily quizzes being provided by Defence Adda and score to the maximum in Mathematics Section of all sorts of defence examinations.

DIRECTIONS: For the next four (04) items that follow:
Consider events A, B, C, D, E of the sample space S = {n : n is an integer such that 10 ≤ n ≤ 20} given by :
A is the set of all even numbers.
B is the set of all prime numbers.
C = (15).
D is the set of all integers ≤ 16.
E is the set of all double digit numbers expressible as a power of 2.

Q7. A, B and D are
(a) Mutually exclusive events but not exhaustive events
(b) Exhaustive events but not mutually exclusive events
(c) Mutually exclusive and exhaustive events
(d) Elementary events

Q8. A, B and C are
(a) Mutually exclusive events but not exhaustive events
(b) Exhaustive events but not mutually exclusive events
(c) Mutually exclusive and exhaustive events
(d) Elementary events

Q9. B and C are
(a) Mutually exclusive events but not exhaustive events
(b) Compound events
(c) Mutually exclusive and exhaustive events
(d) Elementary events

Q10. C and E are
(a) Mutually exclusive events but not elementary events
(b) Exhaustive events but not mutually exclusive events
(c) Mutually exclusive and exhaustive events
(d) Elementary and mutually exclusive events

SOLUTIONS

S7. Ans.(b)
Sol
A, B and D are exhaustive events but not mutually exclusive events.

S8. Ans.(b)
Sol.
A, B and C are exhaustive events but not mutually exclusive events.

S9. Ans.(a)
Sol
B and C are mutually exclusive events but not exhaustive events.

S10. Ans.(a)
Sol
C and E are mutually exclusive and elementary events.