EXERCISE 3.2
is the smallest prime number which is even.
(b) The other prime numbers are 3.5.7.11.13. ... Do you find any even numb
in this list? Of course not, they are all odd.
Thus, we can say that every prime number except 2 is odd.
1. What is the sum of any two(a) Odd numbers? (b) Even numbers?
State whether the following statements are True or False:
(b) The sum of two odd numbers and one even number is even.
(d) Ifan even number is divided by 2, the quotient is always odd.
(a) The sum of three odd numbers is even
(c) The product of three odd numbers is odd.
100.
(e) All prime numbers are odd.
(1) Prime numbers do not have any factors.
g Sumoftwo prime numbers is always even.
(h) 2 is the only even prime number.
(1) All even numbers are composite numbers.
(1) The product of two even numbers is always even.
3. The numbers 13 and 31 are prime numbers. Both these numbers have sam
and 3. Find such pairs of prime numbers upto
4. Write down separately the prime and composite numbers less than 20.
5. What is the greatest prime number between 1 and 10?
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.
[Remark: Two prime numbers whose difference is 2 are called twin prin
8. Which of the following numbers are prime?
(a) 23 (b) 51 (c) 37 (d) 26
9. Write seven consecutive composite numbers less than 100 so that the
number between them.
Answers
Answered by
3
Answer:
1(a)Even number
(b)Even number
(b)True
(d)True
(a)False
(c)False
(e)False except 2
(1)They do have .i.e. 1 and itself
(g)True but when 2 is not added
(h)True
(1)True
(1)True
3. 17 and 71
4.Prime - 1,2,3,5,7,11,13,17 and 19
Composite - Other no. except the above
5. 7
6.(a)21 and 23
(b)17 and 19
(c)11 and 13
(d)7 and 11
7. 11,13
8.(a) and (c)
9. 90,91,92,93,94,95 and 96
Step-by-step explanation:
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Answered by
0
Answer:
The number 2 is the smallest prime number and is even every prime number other than 2 is odd
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