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JEE Advanced 2020 Paper 1

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PART-III : MATHEMATICS

SECTION - 1

Each question has FOUR options. ONLY ONE of these four options is the correct answer.

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Question : 41

Total: 54

Let C1 and C2 be two biased coins such that the probabilities of getting head in a single toss are

, respectively. Suppose α is the number of heads that appear when C1 is tossed twice, independently, and suppose β is the number of heads that appear when C2 is tossed twice, independently. Then the probability that the roots of the quadratic polynomial x2−αx+β are real and equal, is

40
81
20
81
1
2
1
4

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