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 2 of 3.
Swathi Reddy said:
8 years ago
Thank you @Sharat.
Sharat J said:
1 decade ago
I am doing this in even simplest way.
101=1+0+1=2 //prime number.
103=1+0+3=4 //not prime number.
109=1+0+9=10 //not prime number.
113=1+1+3=5 //prime number.
But, 2 is small then 5 so the answer is 101.
101=1+0+1=2 //prime number.
103=1+0+3=4 //not prime number.
109=1+0+9=10 //not prime number.
113=1+1+3=5 //prime number.
But, 2 is small then 5 so the answer is 101.
Vijay said:
8 years ago
All are prime numbers but the smallest is 101.
Komal Gajbhiye said:
8 years ago
Except 2 and 3 every prime number can b written in the form of 2k+or-1.
Here 101 is 2*50+1.
Which means k=50.
Therefore 101 is prime number.
Here 101 is 2*50+1.
Which means k=50.
Therefore 101 is prime number.
Sohel said:
8 years ago
Please, anybody, provide answer correctly in details with easy formula.
Manoj said:
9 years ago
(11)^2 > = 101.
the prime numbers less than or equal to 11 are 2, 3, 5, 7, 11.
Clearly,none of them divides 101.
So, 101 is a prime number.
the prime numbers less than or equal to 11 are 2, 3, 5, 7, 11.
Clearly,none of them divides 101.
So, 101 is a prime number.
Tareque said:
9 years ago
Please give me a list of prime numbers from 101 to 2000.
Help me to get it.
Help me to get it.
Arya said:
1 decade ago
Why we using this step (square root on 101 and also < 11) I can't understand please explain me?
Vikas mahant said:
1 decade ago
Prime number is divisible by 1 and itself.
Kalyan said:
1 decade ago
16 is not a prime. But in the above discussion it seems 16 as prime number.
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