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CBSE Sample Papers for Class 12 Maths UnSolved 2016 Set 10

SECTION —A

Question numbers l to 6 carry 1 mark each
CBSE Sample Papers for Class 12 Maths Solved 2016 Set 7-1

SECTION — B

Question numbers 7 to 19 carry 4 marks each.
CBSE Sample Papers for Class 12 Maths Solved 2016 Set 7-2
CBSE Sample Papers for Class 12 Maths Solved 2016 Set 7-3
CBSE Sample Papers for Class 12 Maths Solved 2016 Set 7-4
CBSE Sample Papers for Class 12 Maths Solved 2016 Set 7-5
CBSE Sample Papers for Class 12 Maths Solved 2016 Set 7-6
19.A speaks truth 8 times out of 10 times. A dice is tossed. He reports that it was 5. What is the probability that it was actually 5 ?

SECTION — C

Question numbers 20 to 26 carry 6 marks each.
CBSE Sample Papers for Class 12 Maths Solved 2016 Set 7-7
21.Find the equation of the line through the point P(3, 4) which cuts from the first quadrant a triangle of the minimum area. Also, find the area of the triangle.
CBSE Sample Papers for Class 12 Maths Solved 2016 Set 7-8
24.Show that the line joining the origin to the point (2,1,1) is perpendicular to the line determined by the points (3,5, -1), (4, 3, -1).

25.There are two types of fertilizers Fj and F2. Fj contain 10% nitrogen and 6% phosphoric acid and F2consists of 5% of nitrogen and 10% phosphoric acid. After testing the soil conditions, a farmer finds that fie needs at least 14 kg of nitrogen and 14 kg of phosphoric acid for the crop. If F1 costs Rs 6/kg and F2costs Rs 5/kg, determine how much of each type of fertilizer should be used so that nutrient requirements are meet at a minimum cost. What is the minimum cost ? What is the value ?

26.An electronic assembly consists of two subsystems say A and B. From the previous testing procedures, the following probabilities are assumed to be known :
P(A fails) = 0.2, P(B fails alone) = 0.15, P(A and B fail) = 0.15.
Evaluate the following probabilities :
i)P(A fails/ B has failed)
ii)P(A fails alone).

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