A long line will be folded in half and then in half, a total of M times to get a harness, with scissors will get the harness cut into N equal parts, get two different lengths of short segments, if the number of longer segments accounts for 1 / 11, ask: what is the larger m? What is the corresponding n? If the number of longer segments is 1 / 11, what is the larger m? If the number of longer segments is 1 / 11, what is the maximum m?
Double the number of fold primary lines
Fold m times in half
Then there are 2 ^ m roots and 2 ^ M-1 turning points
Each turning point corresponds to a long line
Cut it into n pieces
Then there are (n-2) * 2 ^ m + 2 short lines
There are 2 ^ M-1 long lines
Their ratio is 1 / 11
It is reduced to (12-n) 2 ^ m = 12
n> 1 m, n is an integer
12=4*3
n=9 m=2
Please solve a math problem``
Give a packet of sugar to some children. If each person gives 8 pieces, there are 12 pieces left. If each person gives 10 pieces, there are 3 children who can't get sugar. How many children are there? How many pieces are there in this packet?
There are x people
8x+12=10(x-3)
8x+12=10x-30
2x=42
X = 21
Sugar: 8 * 21 + 12 = 180 grains
Father's age is 3.2 times that of Xiao Ming, and mother's age is 2.6 times that of Xiao Ming. It is known that father is 9 years older than mother, Xiao Ming______ I'm 40 years old
The answer is: Xiaoming is 15 years old. So the answer is: 15
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