A. B and C are natural numbers. A △ B = 5, B △ C = 4. What is the least common multiple of ABC?

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• 1. There are three natural numbers a, B, C, which are 6 / A, 5 / C, 5 / A, 5 / B in descending order () There are three non-zero natural numbers a, B, C, C > b > A. arrange 6 / A, 5 / C, 5 / A, 5 / B in the order from big to small ()
• 2. English translation What do you say about "a segment" of the movie? One begins with C and one begins with E
• 3. How about you? English translation, two words
• 4. English translation appear very large or occupy a commanding position Can you tell which word is the explanation? The word Hulk, roar
• 5. Do you know how to read this word
• 6. How to write the English words of seventeen
• 7. If two numbers m and N are specified, 4Mn is obtained by a new operation * such as 2 * 6 = 4x2x6 = 48 No matter what the value of X is, there is always a * x = x to find the value of A To have a specific process, step by step out. Just like solving equations! Why is there a 4ax-x = 0 step? =Where did 0 come from
• 8. Observe the following column of numbers: 1, - 1 / 2,1 / 4, - 1 / 8,1 / 16,... Where there are two adjacent numbers. The difference between the number on the left and the number on the right is - 3 / 64. Find out these two numbers
• 9. There is an electronic clock on the clock tower of a railway station. On the boundary of the clock face, there is a small colored light at the scale of every minute. At 9:35:20 PM, how many small colored lights are there in the angle α between the hour hand and the minute hand? Have a detailed formula process and ideas, I don't want that kind of long row of text description. Use formula to write out. Finally, with the idea of solving the problem
• 10. Please master quickly give an answer, this afternoon will be handed in 1. Given the absolute value of the rational numbers a, B, C (4-A) ^ 2 + (4b-1) ^ 2 + C + 1 = 0, try to find the value of a ^ 3N + 1 × B ^ 3N + 2-C ^ 4N + 2 2. In the product of x ^ 2 + PX + 8 and x ^ 2-3x + Q, there is no x ^ 3 and X term 3. Given x + y = 1, xy = 1 / 5, find (x ^ 2 + 1) (y ^ 2 + 1) 4. Given a ^ 2-3a + 1 = 0. Find the values of a + a 1 / 2, a ^ 2 + A ^ 2 / 1 and (A-A 1 / 2) ^ 2
• 11. ABC are all non-zero natural numbers. A is less than B is less than C. please put the three numbers in the order of big to small
• 12. ABC three different natural numbers, and satisfy 1 / A + 1 / B + 1 / C = 5 / 6 To list
• 13. Group A: 1, 6, 7, 12, 13, 18, 19 Group B: 2, 5, 8, 11, 14, 17, 20 Group C: 3, 4, 9, 10, 15, 16, 21 Then (1) in group B, there were two groups______ (2) the 600th number in group A is______ (3) 1000 is______ The third in the group______ The number of them
• 14. Divide the natural numbers 5 ~ 300 into three groups ABC a) 5 10 11 16 17 22.. b) 6 9 12 15 18 21.. C) 7 8 13 14 19 20.. ask how many numbers each group has Divide natural numbers 5 ~ 300 into three groups ABC a) 5 10 11 16 17 22.. b) 6 9 12 15 18 21.. C) 7 8 13 14 19 20.. how many numbers are there in each group?
• 15. Group A: 1, 6, 7, 12, 13, 18 Group B: 2, 5, 8, 11, 14, 17 Group C: 3, 4, 9 Divide the natural numbers from 1 to 200 into ABC three groups. Group A: 1, 6, 7, 12, 13, 18 Group B: 2, 5, 8, 11, 14, 17 Group C: 3, 4, 9, 10, 15, 16 Please answer the questions according to the grouping rules. 1. There are () natural numbers in group B. 2. What is the 28th number in group A?
• 16. If A.B.C is three sides of a triangle, then the value of A4 + B4 + c4-2a2b2-2b2c2-2a2c2 is a. positive B. negative C. positive or negative D. non negative
• 17. Decomposition factor: a4-2a2b2 + B4
• 18. Given that a, B, C and D are mutually unequal integers, and ABCD = 9, then the value of a + B + C + D is equal to () A. 0b. 4C. 8D
• 19. For positive integers a, B, a △ B is equal to the sum of B consecutive positive integers starting from a, such as 2 △ 3 = 2 + 3 + 4 = 9, or 5 △ 4 = 5 + 6 + 7 + 8 = 26, if 1 △ χ = 15
• 20. Let a = {x | X be a positive integer less than 9}, B = {1,2,3}, C = {3,4,5,6}, find a ∩ B, a ∩ C, a ∩ (B ∪ C), a ∪ (B ∩ C)