Number and Quantification

If n is a natural number,the sqrt(n) always a natural number always an irrational number always an irrational number somexx a natural number and somexx an irrational number

Every point on a number line represents as: (a) a unique real number (b) a natural number (c) a rational number (d) an irrational number

There are five numbers. The second number is 25% more than the first or third number, the fourth number is 5/4 of the third number and the fifth number is 3/2 of the third number. What is the average of the five numbers if the first number is 40?

There are four natural numbers. The average of any three numbers is added in the fourth number and in this way the numbers 29,23,21 and 17 are obtained. One of the number is

Consider the following statements: The number 23 is A. a prime number B. a real number C.an irrational number D. a rational number of these statements

Are the following pairs of statements negations of each other: (i) The number x is not a rational number.The number x is not an irrational number.(ii) The number x is a rational number.The number x is an irrational number.

The sum of an even number and an odd number is an odd number.

Average of three numbers is 28. If the first number be the half of the second number and the third number be the double of the second number. Find the third number.

Factorial of a number and modulus of a number