HCF and LCM Exercise 8B – Selina Concise Mathematics Class 6 ICSE SolutionsQuestion 1. Using the common factor method, find the H.C.F. of : (i) 16 and 35 (ii) 25 and 20 (iii) 27 and 75 (iv) 8, 12 and 18 (v) 24, 36, 45 and 60 Solution:...
Prime and Composite Numbers Divisibility test for 2, 4 and 8 Divisibility test for 7 Highest Common Factor (HCF) We already know that a number which exactly divides two or more given numbers is the common factor of the given numbers. In factorization, we intend to find the factors of a ...
HCF of 8 and 15 is the largest possible number which divides 8 and 15 without leaving any remainder. The methods to compute the HCF of 8, 15 are explained here.
The formula to compute the Least Common Multiple of Fractions is given below i.e. LCM of Fractions = LCM of Numerators/HCF of Denominators. For Example LCM of Fractions 5/4 and 3/8 can be written as LCM(5/4, 3/8) = LCM(5, 3)/HCF(4, 8) = 15/4 ...
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For example, (4 and 7) and (8 and 15) are co-prime numbers. Since Co-prime numbers have only 1 as their highest common factor, their HCF is always 1. What is the HCF of two Consecutive Even Numbers? The HCF of two consecutive even numbers is always 2. We know that the HCF (...
let us consider two numbers, 8 and 20. the prime factorisation of 8 and 20 can be written as: 8 = 2 × 2 × 2 = 2 3 20 = 2 × 2 × 5 = 2 2 × 5 now, lcm = 2 3 × 5 = 8 × 5 = 40 hcf = 2 2 = 4 this way of finding lcm and hcf of numbers is often ...
HCF and Lowest Common Multiple This Math quiz is called 'HCF and Lowest Common Multiple' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or ...
This means that3is the Highest Common Factor of 15 and 18 orHCF (15, 18) = 3. Example 2: Using a Table Let us use 15 and 18 again to see the difference of this method from theFactor Tree method. For the Table Method, we need to make a table with two columns putting the number...