Answer True (T) or False (F).

Two composite numbers are never co-prime.

The H.C.F. of two numbers is always a factor of their L.C.M.

Answer True (T) or False (F).

Two consecutive numbers are always co-prime.

Answer True (T) or False (F).

The H.C.F of two multiples of $10$ is always $10$.

Which of the following should be performed first to simplify the expression:

$(24\times 3)+(16÷8)-12÷2+1$

Which of the following is not equal to $2\times 3\times 5$?

Which pair of numbers has a L.C.M of $150$?

Kim packed $6$ baskets with identical fruits. It was the greatest number she could pack and use all the fruits. Which of these is her fruit list?