Question

Write true or false:
(i) 1 is a prime number.
(ii) There are 8 prime numbers between 1 - 20.
(iii) 12 is a prime number.
(iv) 21 has 4 factors - 1,3, 7 and 21.
(v) 4, 6, 7, 8 and 9 are composite numbers.
(vi) Consecutive numbers are always co-prime.​

Answer 1

Answer:

1. false

2.false

3.false

4.true

Answer 2

Answer:

1.true

2. false

3.false

4.true

5.false

6.false