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Exam study book A Textbook of Discrete Mathematics, 9th Edition of Sarkar, Swapan Kumar - ISBN: 9789385676451 (Question paper)
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CLASS-XISECTION-A : MENTAL ABILITY
This section contains 20 Multiple Choice Questions. Each question has four choices (1), (2), (3) and (4)
out of which ONLY ONE is correct.
1. Introducing a man, a woman said, "He is the only son of my mother's mother." How is the woman
related to the man ?
(1) Mother (2) Aunt (3) Sister (4) Niece
2. Introducing a man, Neeraj said, “His wife is the only daughter of my wife.” How is Neeraj related
to that man?
(1) Father (2) Grandfather
(3) Father-in-law (4) Son
3. If A × B means A is to south of B ; A + B means A is to the north of B ; A % B means A is to the
east of B ; A – B means A is to west of B, then in P % Q + R – S, S is in which direction with
respect to Q ?
(1) South-West (2) South-East
(3) North-East (4) North-West
4. In a code, CORNER is written as GSVRIV. How can CENTRAL be written in that code ?
(1) DFOUSBM (2) GIRXVEP
(3) GNFJKER (4) None of these
5. Amir was born on Feb 29th of 2012 which was a Wednesday. If he lives to be 101 years old, how
many birthdays would he celebrate on a Wednesday?
(1) 3 (2) 4 (3) 5 (4) 1
6. What should come in the place of question mark (?) in the following alpha-numeric series?
C-3, E-5, G-7, I-9, ?, ?
(1) X-24, M-21 (2) K-11, M-13 (3) O-15, X-24 (4) M-18, K-14
7. A clock which gains 10 minutes in 24 hours, is set right at 12 AM. What will be the true time
when the clock indicates 5 AM on the following day?
(1) 4: 48 AM (2) 5: 12 AM
(3) 4: 50 AM (4) 5: 15 AM
8. A clock is started at noon. By 10 min past 5, the hour hand has turned through :
(1) 145° (2) 150° (3) 155° (4) 160°
9. The year next to 1896 that will have the same calendar as that of the year 1896 :
(1) 1902 (2) 1904
(3) 1905 (4) 1908
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,CLASS-XI
10. Some equal cubes are arranged in the form of a solid block as shown in the adjoining figure. All
the visible surfaces of the block (except bottom) are then painted.
How many cubes do not have any of the faces painted?
(1) 27 (2) 32 (3) 36 (4) 40
11.
4 6
1 3 5 3
The number on opposite side of the face having number 3 will be :-
(1) 1 (2) 2 (3) 4 (4) 5
12. The six faces of a cube have been marked with numbers 1, 2, 3, 4, 5 and 6 respectively. This cube
is rolled down three times. The three positions are given. Choose the figure that will be formed
when the cube is unfolded.
(1)
(2) (3) (4)
13. Little wooden cubes each with a side of one inch are put together to form a solid cube with a side
of three inches. This big cube is then painted red all over on the outside. When the big cube is
broken up into the original little ones, how many cubes will have paint on two sides only?
(1) 4 (2) 8 (3) 12 (4) 0
2/16
, CLASS-XI
14. How does the reflection of SJR9PZE7C18 look like in the water? Choose the right option
(1) (2)
(3) (4)
15. This question is based upon the information given below. Study the information carefully and then
choose the correct alternative to answer the question. Five friends A, B, C, D and E are sitting on a
bench.
(1) A is sitting next to B.
(2) C is sitting next to D.
(3) D is not sitting with E.
(4) E is on the left end of the bench.
(5) C is on second position from the right.
(6) A is on the right side of B and to the right side of E.
(7) A and C are sitting together.
Where is A sitting ?
(1) Between B and D (2) Between D and C
(3) Between C and E (4) Between B and C
16. If REASON is coded as 5 and BELIEVED as 7, then what is the code for GOVERNMENT?
(1) 6 (2) 8 (3) 9 (4) 10
17. Count the number of triangles and squares in the given figure
(1) 42 triangles, 8 squares (2) 46 triangles, 8 squares
(3) 44 triangles, 10 squares (4) 44 triangles, 12 squares
18. In the question below, two statements are given followed by two conclusions. Take the given
statement to be true despite being at variance with known facts. Find which of the given
conclusion(s) logically follow(s) from the given statements.
Statements: All doraemons are nobitas . Some nobitas are jiyans.
Conclusions: I- Some doraemons are jiyans
II- Some jiyans are nobitas
(1) Only I follows (2) Only II follows
(3) Either I or II follows (4) None follows
3/16
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