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CUET
-- Applied Mathematics - Section B2
Numbers, Quantification and Numerical Applications
If $\pi (n)$= Number of primes less than or equal to n, n ∈ N, then what is the value of $\pi (24) $?
9
7
8
11
The correct answer is option (1) : 9
$\pi (24)$
Prime no. $≤ 24= 2, 3, 5, 7, 11, 13, 17, 19, 23$
$∴\pi (24)= 9$
