Fill in the blanks.
(i) 1 is neither ...... nor ....... .
(ii) The smallest prime number is ...... .
(iii) The smallest composite number is ...... .
(iv) The HCF of two consecutive odd numbers is ....... .
(v) Two perfect numbers are ...... and ...... .

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Solution

(i) prime, composite
(ii) 2
(iii) 4
(iv) 1
(v) 6, 28

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Fill in the blanks in the following:
(i) A number having only 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 composite number is ____

Q. Take the smallest odd composite number and largest three digit prime number. What is the difference between the LCM and the HCF of these two numbers?

Fill in the blanks:

(a) A number which has only two factors is called a _______.

(b) A number which has more than two factors is called a _______.

(d) The smallest prime number is _______.

(e) The smallest composite number is _______.

(f) The smallest even number is _______.

State true (T) of false (F):

$(i)$ The sum of primes cannot be a prime.

$(i i)$ The product of primes cannot be a prime.

$(i i i)$ An even number is composite.

$(i v)$ Two consecutive numbers cannot be both primes.

$(v)$ Odd numbers cannot be composite.

$(v i)$ Odd numbers cannot be written as sum of primes.

$(v i i)$ A number and its successor are always co-primes.

what is the HCF of the smallest composit number and smallest prime number

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Fill in the blanks. (i) 1 is neither ...... nor ....... . (ii) The smallest prime number is ...... . (iii) The smallest composite number is ...... . (iv) The HCF of two consecutive odd numbers is ....... . (v) Two perfect numbers are ...... and ...... .

(i) prime, composite (ii) 2 (iii) 4 (iv) 1 (v) 6, 28

Fill in the blanks.
(i) 1 is neither ...... nor ....... .
(ii) The smallest prime number is ...... .
(iii) The smallest composite number is ...... .
(iv) The HCF of two consecutive odd numbers is ....... .
(v) Two perfect numbers are ...... and ...... .

(i) prime, composite
(ii) 2
(iii) 4
(iv) 1
(v) 6, 28