Observe the following sequence and write the correct numbers in brackets according to the rule: 1,2,4,7,11, () A16 B12 C18

Observe the following sequence and write the correct numbers in brackets according to the rule: 1,2,4,7,11, () A16 B12 C18

A 1+1=2 2+2=4 4+3=7 7+4=11 11+5=16

One question for civil servants: 1, 2, 4, 4, 1, () fill in the values in brackets according to the law of sequence

It should be 1 / 32
1 2 4 4 1 (1/32)
In addition to the former, the latter obtains: 2 1 1 / 4 (1 / 32)
Continue the last item except the previous item: 1 1 / 2 1 / 4 (1 / 8)
So this is a second-order proportional sequence
These terms cannot be determined to be alternating sequences

Look at the regular series and fill in the blanks
Minus one plus minus one third plus one fifth
The nth number is________
Please give me the answer quickly. Class will start at 5:30

1/((2n-1)*(-1)^n)

Find sequence 1, 8, 27, 64 Item 10 of
Seek formula, no formula also want to explain, good plus 10 points!
Explain the next amount, do not understand!

The tenth term is the third power of 10, which is 1000

The general formula of 2 3 6 11 18 sequence

General terms:
an=n²+2
I hope it can help you. If you are satisfied, please accept it in time,
Your adoption is the driving force of my answer!

Sequence 2 2 18 54
RT is not 2,6,18,54

The most convenient method is to set the general term as an = a * n ^ 3 + b * n ^ 2 + C * n + D. from the condition, A1 = a + B + C + D = 1A2 = 8A + 4B + 2C + D = 8a3 = 27a + 9b + 3C + D = 73a4 = 64a + 16b + 4C + D = 585, solve the above equation to find a, B, C, D, and substitute it into an = a * n ^ 3 + b * n ^ 2 + C * n + D, that is to get the general direction formula of the sequence composed of any five numbers

Sequence 1,2,4,6,7,18,10,54, what is the question?

13
Every other item, 1, 4, 7, 10, is 3, so the question mark is 13
2. 6, 18, 54 and each other are multiples of 3

Observe the following column, find out the rules and fill in the blanks
2,5,10,17,26,37, then its number 2006 is () and its number n is () (expressed by an algebraic expression containing n)

2006*2006+1
n*n+1

Observe the law of the following column number, 0, 3, 8, 15, 24 Then its number 2007 is______ ．

According to the law, 20072-1 = 4028048

Who is the most beautiful woman in the world?

Who knows, everyone's eyes are different, OK? There is a girl I think is beautiful, but not beautiful for you. This is the eye
Therefore, we should have self-confidence and say to ourselves, "I am the most beautiful in the world. This is not bragging, this is self-confidence