Find the missing number:

The ratio of two numbers is 5 : 6 and their HCF is 8. What is the LCM of these numbers?

The difference between the squares of two consecutive even integers will always be divisible by which of the following?

(A) 2

(B) 3

(C) 4

(D) 5

Choose the correct answer from the options given below:

Consider the following statements

(A) Square of an odd number is of the form 4n + 1.

(B) 1 is a prime number.

(C) 83356768 is divisible by 11.

Which of the statement(s) given above is/are incorrect?

The sum of the natural numbers which are divisors of 100, is:

In a number system $\sqrt{3}$ is:

The difference between the two numbers is 1365. When the larger number is divided by the smaller one, the quotient is 6 and the reminder is 15. Find the smallest number?