The probability that a number selected at random from the first 100 natural numbers is a composite number is ?
The number of exhaustive events = 100 C₁ = 100.
We have 25 primes from 1 to 100.
Number of favourable cases are 75.
Required probability = 75/50 = 3/2.
Find the range and mode of the data 17, 18, 28, 19, 16, 18, 17, 29, 18
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