MathsJEE Main 4 Apr 2026, Shift 2·Q21·Numerical·Moderate

Probability · Classical probability

From a month of 31 days, 3 different dates are selected at random. If the probability that these dates are in an increasing A.P. is equal to

\dfrac{a}{b}

, where

a, b \in \mathbb{N}

and

\gcd(a, b) = 1

, then

a + b

is equal to .

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