Statistics and Probability: JEE Main 2025 Mathematics question

JEE Main 2025 · April, Unspecified (session-level dataset) · Q155

JEE Main 2025April, Unspecified (session-level dataset)MathematicsMediumStatistics and Probability258× since 2002

A bag contains 19 unbiased coins and one coin with heads on both sides. One coin drawn at random is tossed and a head turns up. If the probability that the drawn coin was unbiased is

\frac{m}{n}

, with

\gcd(m,n)=1

, then

n^2 - m^2

is equal to:

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JEE Main 2025 Statistics and Probability Question with Solution (April Unspecified (session-level dataset), Q155) | JEE Arc