Perfect Numbers – Definition & Examples Definition: A perfect number is a positive integer that is equal to the sum of its positive divisors, excluding the number itself.For example 6 has 1, 2, and 3 divisors (excluding itself), and 1 + 2 + 3 = 6, so 6 is a perfect number. 28 has 1, […]
Read More →Worksheets – Set Theory 8 Different Types of Questions on Sets with Answers. Question (1) Which of the following are sets. (i) The collection of all good books in a library. (ii) The collection of all even numbers less than 10. (iii) The collection of all dishonest people in a village. (iv) The collection of all students in […]
Read More →Odd numbers Definition: If any integer that can not divide exactly by 2, is an odd number. Simply, If we divide any integer by 2, and remainder is one, we get an odd number. The last digit of odd numbers is 1, 3, 5, 7, 9, 11… Example: 11, 23, 35, 47, 69, all are odd numbers. […]
Read More →Important sets in Mathematics 1. N = Set of all “Natural” numbers. 2. W = Set of all “Whole” numbers. 3. Q = Set of all “Rational” numbers. 4. Z = Set of all “Integers”. 5. R = Set of all “Real” numbers. 6. Z + = Set of “Positive” Integers. 7. Q + = Set of “Positive Rational” numbers. 8. R + = Set of “Real” numbers.
Read More →Positive Integers on Number Line A number line shows positive integers on the right side of the zero. We understand the concept in a better way with the help of examples. Example: Below number line represents integer 4 an d 4 is a positive integer, so, 4 is right side of 0. […]
Read More →How to express Rational Numbers in Standard Form Definition: If in a rational number, numerator and denominator have no common factor other than 1, and its denominator is a positive integer then the rational number will be in a standard form. Standard form is also known as simplest form or lowest form. Example: 1. Convert the rational […]
Read More →Difference – Positive Rational Numbers and Negative Rational Numbers Here, we learn difference between positive and negative rational numbers.
Read More →Zero is a Rational Number Rational number is define as a rational number is a number that can be written in the form p/q, where p and q are integers and q is not equal to 0. We know that the integer 0 is written in any of the form such as 0/1, 0/3, 0/5, o9, where denominator […]
Read More →Negative Rational Numbers Definition: A rational number is said to be negative rational number if its numerator and denominator are opposite sign such that one of them is positive integer and other one is a negative integer. In other words, a rational number is negative if its numerator and denominator are of […]
Read More →Positive Rational Numbers Definition: A rational number is said to be positive rational number, if its numerator and denominator both are either positive integers or negative integers. In other words, a rational number is positive if its numerator and denominator are of the same sign. Example: 2/9, 3/5, 7/6, […]
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