Fill in the blanks:
(i) A number having exactly two factors is called a …..
(ii) A number having more than two factors is called a ………
(iii) 1 is neither ……… nor ………
(iv) The smallest prime number is ………
(v) The smallest odd prime number is ………
(vi) The smallest composite number is ………
(vii) The smallest odd composite number is ………
(viii) All prime numbers (except 2) are ………
Solution:
State whether the following statements are ture (T) or false (F):
(i) The sum of three odd numbers is an even number.
(ii) The sum of two odd numbers and one even number is an even number.
(iii) The product of two even numbers is always an even number.
(iv) The product of three odd numbers is an odd number.
(v) If an even number is divided by 2, the quotient is always an odd number.
(vi) All prime numbers are odd.
(vii) All even numbers are composite.
(viii) Prime numbers do not have any factors.
(ix) A natural number is called a composite number if it has atleast one more factor other than 1 and the number itself.
(x) Two consecutive numbers cannot be both prime.
(xi) Two prime numbers are always co-prime numbers.
Solution:
More Solutions:
- The absolute value of 0 is ………..
- State whether the following statements are true or false.
- The number of integers between -1 and 1 is
- The greatest integer lying -10 and -15 is
- Which of the following statement is false?
- On subtracting -7 from -4, we get
- The statement “when an integer is added to itself.
- Use the appropriate symbol < or > to fill in the following blanks:
- Evaluate: |-13| – |-15|
- Subtract the sum of -235 and 137 from -152.