Title: 880, (), 600, (), (), 220.
Answer:
(1), minus 140 for the first three operations and minus 80 for the last three operations.
880- 140=740,
740- 140=600
600- 140=460
460-80=380
380-80=300
300-80=220
Results: 880 (740) 600 (460) (380) (300) 220.
(2) The first two operations are reduced by 140, the middle two operations by 1 10, and the last two operations by 80.
880-740 = 140740-600 = 140600-490 = 1 10490-380 = 1 10380-300 = 80300.
If the prefix is changed to 800, you can subtract 100 from the front quantifier and 90 from the middle quantifier, such as: 800,-100-> 700,-100-> 600，-90->； 5 10，-90->； 420，- 100->； 320，- 100->； 220. The result is: 800 (700) 600 (510) (420) (320) 220. Question 2: Find the pattern: 50% 40% 37.511.414. Answer: In terms of component number, the known condition of this problem is1/22/53/84/115/14.
So it can be seen that the molecules are arranged in the order of natural numbers.
The denominator is the next one that is 3 bigger than the last one.
So the next two are 6/ 17 and 7/20 respectively.
While the 7/20 dial indicator shows 35%.
So the answer is
6/ 17 and 35%
The third question: find the law.
Title: 19+9 times 9 1 18+9 times 9117+987 times 91/kloc-0.
Answer:11114+987654 times 91165438.
[column loss can be found.
19+9 times 9
1 18+9 times 9.
1 1 17+987 times 9.
11116+9876 times 9.
111115+98765 times 9.
(111114+987654 times 9)
(111111+9876543 times 9)
Question 4: Find the law in the first day.
Title: (2, 4, 8, 16) ... expressed by a formula containing n.
1, expressed by a formula containing n.
2. What are the fifth and tenth?
Best answer:
1 n power of 2
2. The fifth is 2 to the fifth power =32, and the tenth is 2 to the 10 power = 1024.
Question 5: Find a rule for filling in numbers.
Title: 4, 9, (), 43, (), 185
Best answer
4、9、(20)、43、(90)、 185
The specific rules are as follows:
9 =4×2+ 1;
20=9×2+2;
43=20×2+3;
90=43×2+4;
185=90×2+5。
Guess what number should be filled in the brackets below?
2,4,7, 1 1, 16,( )
This problem is often encountered in games, intelligence tests and math competitions. Before you fill in the numbers, you should first find out the arrangement of the original numbers.
Try to find the difference between every two adjacent numbers and get them in order.
2,3,4,5。
In this way, we can see the law that the latter difference is always higher than the previous adjacent difference 1. So, add a difference after the line, which should be 6.
Therefore, the number that should be filled in brackets is
16+6=22。
Try a similar game.
What number should I put in the brackets below?
3,5,9, 17,33,65,( )
Try to find the difference between every two adjacent numbers and get them in order.
2,4,8, 16 32。
This shows the law: the last difference is always twice that of the previous adjacent difference. So, add a difference after the line, which should be 64.
Therefore, the number that should be filled in brackets is
65+64= 12
1 10 3 5 ?
3 7 10 1 1 12 ?