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1) There is a five digit number.
The fifth digit is one fourth of the third digit and
one half of the fourth digit.
Third digit is one half
of the
first digit.
second digit is 5 more than the fifth digit.
What is that 5 digit no.?
Ans. 86421
2) There are three associates and they have some money
in a room.
But no one is believing others alone. so,
a) No one should be able to open the room alone.
b) When any 2 persons are combined they should be
able to open
the room.
What is the minimun no. of locks & keys required.?
(5M)
Ans. 3 Locks and 2 keys of Each Lock ( 6Keys)
Explanation:
Let Three person is x,y,z And Lock are A B C then
x have key of A and B
y have B and C
z have C and A
3) A simple racing prob. like Samantha beat Jim. Jack
lost to
Jim. John was not last.
And the prob goes like this... (simple)
Ans. samantha
4) A boy goes to school from his house.on one fourth
oh his way to
school, he crosses a
machinery station.
And on one third of his way to
school, he
crosses a Railway station.
He crossed the machinery station at 7:30 and he
crosses the
Railway station at 7:35.
when does he leave the house & when does he reach the
school ?
(5M)
Ans.
Starting Time 7:15
and arrival at School 8:15
5) An Eraser,Pencil,Notebook together costs $1.00.
Notebook costs
more than the cost of
2 Pencils.
3 Pencil costs more than 4 Erasers. 3
Erasers costs
more than a Notebook.
How much does a pencil costs? (5M)
Ans.
Pencil $0.26, Eraser 0.19, Notebook 0.55
6) I can't remember the prob. fully. (* Check this in
previous
questions. Its there!)
Old Problem with three inhabitants of three castes.
Abhor,Magar &
Dravid. (8M)
1) Abhor women cannot marry Dravid man.
2) Dravid women cannot marry Magar man.
3) Male child gets the father's caste and female
child gets the
mother's caste.
4) all other marriages are allowed.
5) ...
4 questions related with this...each of 2 marks...
like...
1) A magar man can have ...
a) a dravid grandmother.
b) a abhor mother.
c)....
7) Series...
a) 3,6,13,26,33,66, ?
Ans. 73, 146 .....
Explanation
3*2 = 6 6+7 = 13
13*2 = 26 26+7 = 33
33*2 = 66
b) 364, 361, 19, 16, 4, 1, ?
Ans 1, -2
Exp:
364 - 3 = 361 sqrt(361) = 19
19 -3 = 16 sqrt(16) = 4
4 - 3 = 1
8) A large cube is painted on all sides with Red
color. It is then
cut into 27 small cubes.
How many sides of the cube will have...
a) 3 red faces. Ans. 8
b) 2 red faces. Ans 12
c) 1 red face. Ans 6
d) No red faces. (8M)
Ans 1
9) Four persons A,B,C,D were there. All were of
different weights.
All Four gave a
statement.Among the four statements only the person
who is
lightest in weight of all
others gave a true statement.
A Says : B is heavier than D.
B Says : A is heavier than C.
C Says : I am heavier than D.
D Says : C is heavier than B.
Find the lightest & List the persons in ascending
order according
to their weights. (5M)
Ans: A speaks true and others speek false
so order is A,C,D,B( heaviest)
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