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Aptitude · Q450

Number System

Competitive Exams · Aptitude · question 450

Q450

The smallest three-digit prime number is :

A.
101
Answer
B.
103
C.
107
D.
None of these

Answer: Option A

Solution

Answer: Option A
Solution:
Clearly, 100 is divisible by 2. So, 100 is not prime.
(101) < (11)2 and prime numbers less than 11 are 2, 3, 5, 7
Clearly, 101 is not divisible by any of 2, 3, 5 and 7
Hence, 101 is the smallest 3-digit prime number.