Maths Past Question Paper of 12th Class CBSE

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Learning Objective
MathQuestion Paper2018
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Learning Outcomes
To solve questions from Section
A To solve questions from Section
B To solve questions from Section
C To solve questions from Section D
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Question Number 1
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Answer
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Question Number 2
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Answer
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Question Number 3
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Answer
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Question Number 4
If a b denotes the larger of a and b and if
a o b (a b) 3, then write the value of (5)
o (10), where and o are binary operations.
Lets solve it!
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Answer
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Learning Outcomes
To solve questions from Section
A To solve questions from Section
B To solve questions from Section
CTo solve questions from Section D
How confident do you feel?
12
Learning Outcomes
To solve questions from Section
A To solve questions from Section
B To solve questions from Section
CTo solve questions from Section D
How confident do you feel?
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Question Number 5
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Answer
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Question Number 6
a Aa
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Answer
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Question Number 7
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Answer
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Question Number 8
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Answer
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Question Number 9
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Answer
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Question Number 10
Aa
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Answer
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Question Number 11
aa
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Answer
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Question Number 12
A black and a red die are rolled together. Find
the conditional probability of obtaining the sum
8, given that the red die resulted in a number
less than 4.
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Answer
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Learning Outcomes
To solve questions from Section
A To solve questions from Section
B To solve questions from Section
CTo solve questions from Section D
How confident do you feel?
30
Learning Outcomes
To solve questions from Section
A To solve questions from Section
B To solve questions from Section
CTo solve questions from Section D
How confident do you feel?
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Question Number 13
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Answer
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Question Number 14a
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Answer
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Question Number 14b
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Answer
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Question Number 15
Aa
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Answer
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Question Number 16a
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Answer
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Question Number 16b
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Answer
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Question Number 17
An open tank with a square base and vertical
sides is to be constructed from a metal sheet so
as to hold a given quantity of water. Show that
the cost of material will be least when depth of
the tank is half of its width. If the cost is to
be borne by nearby settled lower income families,
for whom water will be provided, what kind of
value is hidden in this question ? 
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Answer
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Question Number 18
Aaa
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Answer
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Question Number 19a
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Answer
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Question Number 19b
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Answer
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Question Number 20
AAaa
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Answer
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Question Number 21
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Answer
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Question Number 22
Suppose a girl throws a die. If she gets 1 or 2,
she tosses a coin three times and notes the
number of tails. If she gets 3, 4, 5 or 6, she
tosses a coin once and notes whether a head or
tail is obtained. If she obtained exactly one
tail, what is the probability that she threw 3,
4, 5 or 6 with the die ?
Lets solve it!
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Answer
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Question Number 23
Two numbers are selected at random (without
replacement) from the first five positive
integers. Let X denote the larger of the two
numbers obtained. Find the mean and variance of
X. 
Lets solve it!
58
Answer
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Learning Outcomes
To solve questions from Section
A To solve questions from Section
B To solve questions from Section
CTo solve questions from Section D
How confident do you feel?
60
Learning Outcomes
To solve questions from Section
A To solve questions from Section
B To solve questions from Section
CTo solve questions from Section D
How confident do you feel?
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Question Number 24a
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Answer
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Question Number 24b
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Answer
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Question Number 25a
Aaaaa
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Answer
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Question Number 25b
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Answer
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Question Number 26
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Answer
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Question Number 27a
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Answer
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Question Number 27b
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Answer
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Question Number 28
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Answer
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Question Number 29
A factory manufactures two types of screws A and
B, each type requiring the use of two machines,
an automatic and a hand-operated. It takes 4
minutes on the automatic and 6 minutes on the
hand-operated machines to manufacture a packet of
screws A while it takes 6 minutes on the
automatic and 3 minutes on the hand-operated
machine to manufacture a packet of screws B.
Each machine is available for at most 4 hours on
any day. The manufacturer can sell a packet of
screws A at a profit of 70 paise and screws B
at a profit of Rs. 1. Assuming that he can sell
all the screws he manufactures, how many packets
of each type should the factory owner produce in
a day in order to maximize his profit ? Formulate
the above LPP and solve it graphically and find
the maximum profit.
Lets solve it!
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Answer
79
Learning Outcomes
To solve questions from Section
A To solve questions from Section
B To solve questions from Section
CTo solve questions from Section D
How confident do you feel?
80
Learning Outcomes
To solve questions from Section
A To solve questions from Section
B To solve questions from Section
CTo solve questions from Section D
How confident do you feel?
81
Learning Objective
MathQuestion Paper2018
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