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6th CBSE Latest Syllabus
IMPORTANT
Earn 100

We see that 2 is a prime and also an even number. Is there any other even prime?

Important Questions on Prime Time

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6th CBSE Latest Syllabus
IMPORTANT
Look at the list of primes till 100. What is the smallest difference between two successive primes? What is the largest difference?
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6th CBSE Latest Syllabus
IMPORTANT
Are there an equal number of primes occurring in every row in the table on the previous page?Which decades have the least number of primes? Which have the most number of primes?
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6th CBSE Latest Syllabus
IMPORTANT
Which of the following numbers are prime: 23,51,37,26?
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6th CBSE Latest Syllabus
IMPORTANT
Write three pairs of prime numbers less than 20 whose sum is a multiple of 5
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6th CBSE Latest Syllabus
IMPORTANT
The numbers 13 and 31 are prime numbers. Both these numbers have same digits 1 and 3. Find such pairs of prime numbers up to 100.
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6th CBSE Latest Syllabus
IMPORTANT
Find seven consecutive composite numbers between 1 and 100.
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6th CBSE Latest Syllabus
IMPORTANT
Twin primes are pairs of primes having a difference of 2. For example, 3 and 5 are twin primes. So are 17 and 19. Find the other twin primes between 1 and 100.
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6th CBSE Latest Syllabus
IMPORTANT
Which of the following numbers is the product of exactly three distinct prime numbers: 45,60,91,105,330?