72,90 Find the LCM of the following groups of numbers by Division C 16, 28, 40,70 63, 84, 147 108, 96, 72,54.36 48,64, 72, 96, 108 144, 180, 384 b. 28, 36, 45, 60 d. 162, 135, 108 f. 660,420,240 h. 3, 12, 24, 36,56,84 i. 3;12;36;56;84
Answers
In Mathematics, LCM of any two is the value which is evenly divisible by the two given numbers. The full form of LCM is Least Common Multiple. It is also called the Least Common Divisor (LCD). For example, LCM (4,5) = 20. The divisor 20 is divisible by both 4 and 5.
LCM is also used to add or subtract any two fractions when the denominators of the fractions are different. While performing any arithmetic operations such as addition, subtraction with fractions, LCM is used to make the denominators common. This process makes the simplification process easier.
Definition
Least Common Multiple(LCM) is a method to find the smallest common multiple between any two or more numbers. A common multiple is a number which is a multiple of two or more numbers.