Aptitude - Numbers - Discussion
Discussion Forum : Numbers - General Questions (Q.No. 17)
17.
The smallest 3 digit prime number is:
Answer: Option
Explanation:
The smallest 3-digit number is 100, which is divisible by 2.
100 is not a prime number.
101 < 11 and 101 is not divisible by any of the prime numbers 2, 3, 5, 7, 11.
101 is a prime number.
Hence 101 is the smallest 3-digit prime number.
Discussion:
22 comments Page 3 of 3.
Shaban Mirimu said:
5 years ago
Apply digital root, 1 + 0 + 0 = 1 and 1 is not a prime number.
101---1 + 0 + 1 = 2 and 2 is a prime number. So, 101 is the answer.
101---1 + 0 + 1 = 2 and 2 is a prime number. So, 101 is the answer.
(15)
Bhargavi R said:
4 years ago
How to fine the √101th < 11? Please explain the step.
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