To find the lowest common multiple (LCM) of two numbers, you first need to find the prime factors of each number. The prime factors of 154 are 2, 7, and 11, while the prime factors of 231 are 3, 7, and 11. To calculate the LCM, you multiply each prime factor the greatest number of times it occurs in either number: 2 x 3 x 7 x 11 = 462. Therefore, the lowest common multiple of 154 and 231 is 462.
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There is an infinite number of common multiples for 7 and 11. A common multiple of any two or more numbers is any number into which each of two or more numbers can be divided evenly (zero remainder). However, the least or lowest common multiple (LCM) of 7 and 11 is 77.
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=154/231 =7(22)/7(33) =11(2)/11(3) =2/3
77, 154, 231, 308 are multiples of 77
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