Q. Which is Co-Prime 5, 11, or 20, 24 Ans. 5, 11 20,24 5 - 1X5 20 - 1X20, 2X10, 4X5, 5x4, 10X2, 20X1 11 - 1X11 24 - 1X24, 2X12, 3X8, 4X6, 6X4, 8X3, 12X2, 24X1 Sum of two odd Primes:- 18 - 5+13, 7+11 32 - 3+29, 13+19 Sum of three odd Primes:- 41 - 5+7+29, 7+11+23 Composite number: - A number which has more than 2 factors is called Composite numbers.(Numbers which is not Prime they are all composite). Important 1 - neither Prime nor composite 2 - The smallest even number (1x2, 2x1 only Prime even number) 3 - The smallest odd Prime number (1x3, 3x1) 4 - The smallest even composite number because 4- 1x4, 2x2, 4x1 5 - Prime Number (1x5, 5x1) 6- Composite number (1x6,2x3,3x2,6x1) 7- Prime number (1x7, 7x1)
Q. Which is Co-Prime 5, 11, or 20, 24 Ans. 5, 11 20,24 5 - 1X5 20 - 1X20, 2X10, 4X5, 5x4, 10X2, 20X1 11 - 1X11 24 - 1X24, 2X12, 3X8, 4X6, 6X4, 8X3, 12X2, 24X1 Sum of two odd Primes:- 18 - 5+13, 7+11 32 - 3+29, 13+19 Sum of three odd Primes:- 41 - 5+7+29, 7+11+23 Composite number: - A number which has more than 2 factors is called Composite numbers.(Numbers which is not Prime they are all composite). Important 1 - neither Prime nor composite 2 - The smallest even number (1x2, 2x1 only Prime even number) 3 - The smallest odd Prime number (1x3, 3x1) 4 - The smallest even composite number because 4- 1x4, 2x2, 4x1 5 - Prime Number (1x5, 5x1) 6- Composite number (1x6,2x3,3x2,6x1) 7- Prime number (1x7, 7x1)
Class%20VI%20Maths%20Notes.docx