Exercise

Which of the following numbers has a LCM $60$?

I am the fifth multiple of the LCM of $2$ and $7$.  What number am I?

Determine the number nearest to $100000$ but greater than $100000$ which is exactly divisible by each of $8, 15 \text{and} 21$.

Which of the following is not a pair of twin primes between $10$ and $40$?

The least prime number with consecutive digits is _____.

The greatest number that exactly divides $81$ and $153$ is _____. 

Replace $y$ by the non-zero digit, if the number $68y70$ is divisible by $6$.

Which number is a factor of every number?