A number is divisible by both 5 and 12. By which other number will that number be always divisible?

A number is divisible by both 7 and 16. By which other number will that number be always divisible?

Which number is divisible by both 9 and 11?

A number is divisible by 12. By what other numbers will that number be divisible?

A number is divisible by 24. By what other numbers will that number be divisible?

A number is always divisible by 180, if

18 is divisible by both 2 and 3. It is also divisible by 23=6. Similarly,a number is divisible by both 4 and 6. Can we say that the number must also divisible by? If not,give an example to justify your answer.

Which of the following statements are true? If a number is divisible by 3, it must be divisible by 9. If a number is divisible by 9, it must be divisible by 3. If a number is divisible by 4, it must be divisible by 8. If a number is divisible by 8, it must be divisible by 4. If a number is divisible by 18, if it is divisible by both 3 and 6. If a number is divisible by both 9 and 10, it must be divisible by 90. If a number exactly divides the sum of two numbers, it must exactly divide the numbers separately. If a number divides three numbers exactly, it must divide their sum exactly. If two numbers are co-prime, at least one of them must be a prime number. The sum of two consecutive odd numbers is always divisible by 4.

Write (T) for true and (F) for false against each of the following statements : (i) If a number is divisible by 4. it must be divisible by 8 . (ii) If a number is divisible by 8 . it must be divisible by 4 . (iii) If a number divides the sum of two number exactly. it must exactly divide the num .bers separately. (iv) If a number is divisible by both 9 and 10 . it must be divisible by 90. (v) A number is divisible by 18 if it is divisible by both 3 and 6 . (vi) If a number is divisible by 3 and 7 . it must be divisible by 21. (vii) The sum of two consecutive odd number is always divisible by 4 . (viii) If a number divides two number exactly. it must divide their sum exactly.

A number is divisible by 6 if it is divisible by