JEE Advanced 2023 · Paper 2 · numerical answer

JEE Advanced 2023 Mathematics question on Probability

Let XX be the set of all five digit numbers formed using 1,2,2,2,4,4,0. For example, 22240 is in XX while 02244 and 44422 are not in XX. Suppose that each element of XX has an equal chance of being chosen. Let pp be the conditional probability that an element chosen at random is a multiple of 20 given that it is a multiple of 5. Then the value of 38p38p is equal to
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Answer: 31

[JEE Advanced 2023 · Paper 2]

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