1)  Which number is neither a prime number nor a composite number ?
ans-1[你明啦]

2)  Whatis the difference between the biggest and the smallset prime numbers within 100 ?
ans-97-2=95[最大質數減最細質數]

3) Write down all the prime factors of 36 .
ans-1,2,3[所有36既質因數]

4)write down the first five multiples of 9 .
ans-9,18,27,36,45[頭5個倍數]