What is the smallest positive integer added to 8270 that is divisible by 16?

Find the smallest number which when increased by 20 is completely divisible by 12, 20, 15, 18 and 24.

The LCM of the numbers 3.7 and 0.068 is:

The number of prime numbers lying between 300 and 305 is:

The number of prime numbers lying between 323 and 332 is:

Find the Highest Common Factor (HCF) of 372, 732 and 2196.