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The least common multiple of 14, 21 and 35 is
The least common multiple of 14 and 21 is 42
The least common multiple of 42 and 35 is 210
So the least common multiple of 14, 21 and 35 is 210
Find the rule and fill in 1 37 () 21 () 1 45 10 () ()
The difference between the two numbers is: 2,4,6,8,10, adding 2 in turn
1 4 5 10 (20) (40) starting from the third number, each number is equal to the sum of all previous numbers
Find the rule and fill in the numbers -- (), 2,3,6,5,10,7, ()
——（1）,2,3,6,5,10,7,（14）……
Put the first, the third, the fifth As a single sequence 1 3 5 7
And the second, the fourth, the sixth As a single sequence
Find the law () 21 () 35 ()
（） （） 21（）35（）
7*3 7*5
So fill in (7) (14) 21 (28) 35 (42)
7*1 7*2 7*3 7*4 7*5 7*6
Your satisfactory adoption is the best encouragement to the respondents
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