Question

15. Find the common factors of 75, 60 and 210
16. Find the common multiples of 3-4 and 9.
17. Write all the numbers less than 100 which are common multiples of 3 and 4
18. A number is divisible by both 5 and 12. By which other number will that number be always
divisible?
19. A number is divisible by 12. By what other numbers will that number be divisible!
20. Find the prime factorisation of 980.
21. Write the greatest 4-digit number and express it in terms of its prime factors,
22. Write the smallest 5-digit number and express it in the form of its prime factors​

Answer 1

The answers which I know I sent

hope u can understand and it may help you