Test Index

JEE Advanced 2020 Paper 2

SECTION - 3

For each question, enter the correct numerical value of the answer using the mouse and the on-screen virtual numeric keypad in the place designated to enter the answer. If the numerical value has more than two decimal places, truncate/round-off the value to TWO decimal places.

Question : 51

Total: 54

Two fair dice, each with faces numbered 1,2,3,4,5 and 6, are rolled together and the sum of the numbers on the faces is observed. This process is repeated till the sum is either a prime number or a perfect square. Suppose the sum turns out to be a perfect square before it turns out to be a prime number. If p is the probability that this perfect square is an odd number, then the value of 14p is _____

Your Answer:

Validate

Output	Ways to Occur
Perfect squares → 1, 4, 9	7 (1 will never occur)
primes → 2, 3, 5, 7, 11	15
Remaining → 6, 8, 10, 12	14

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