They are members of the infinite set of numbers of the form 1260*k where k is an integer. Since the set is infinite, it is not possible to list them.
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1 is the least common factor of the number 2, number 4 and number 7. 28 is the least common multiple of the number 2, number 4 and 7.
Write down the factors of each number. Hence 3 = 1,3 4 = 1,2,2,4 5 = 1, 5, 6 = 1,2,3,6 7 = 1, 7 Hence 1, is common to all number. 2, is common to two numbers 3, is common to two numbers 5 is common to one number 7 is common to one number. Hence 1 x 2 x 3 x 5 x 7 = 210 the LCM.
4 5/7
4/4*5*7 = 1*5*7 = 5*7 = 35
The least common multiple of 4 , 7 , 5 , 3 = 420