Q5 of 55 Page 53

What is the greatest prime number between 1 and 10?

First look for all the prime numbers between 1 and 10;


2, 3, 5, and 7.


Among these prime numbers 7 is the greatest.


More from this chapter

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3

The numbers 13 and 31 are prime numbers. Both these numbers have same digits 1 and 3. Find such pairs of prime numbers upto 100.

 4

Write down separately the prime and composite numbers less than 20.

 6

Express the following as the sum of two odd primes:

(a) 44 (b) 36


(c) 24 (d) 18

 7

Give three pairs of prime numbers whose difference is 2.