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In & nbsp; 1, 2, 3, 4 Take two numbers out of the 100 numbers, so that the sum of the two numbers can be divisible by 4, at most______ There are two different methods
These 100 numbers can be divided into four groups according to the remainder of division by 4: 0, 1, 2, 3. These four groups are the groups with the remainder of 0: 4, 8, 12 Group 1, 5, 9, 13 The group with the remainder of 2: 2, 6, 10, 14 The group with the remainder of 3: 3, 7, 11, 15 、99...
What does three fourths of a meter multiply by eight mean
Three quarters of eight
Eight times three fourths and three fourths times eight have the same calculation results and the same meaning, right or wrong?
The meaning is different: eight times three quarters means to divide eight into four parts and take three of them; three quarters times eight means to add eight three quarters
Three fourths multiplied by two ninths means that three fourths are divided equally into nine parts, two of which are taken,
Yes, there is no problem with the formula. If you want to be strict, you should divide one into three quarters, then nine and take two
Seven out of nine is a fraction of one and a half
Hello
7 / 9 and 1 / 2
=14 out of 27
Turn the following fraction into a false fraction: one and a half, three and a half, four and two and seven and two and nine and four
1 / 2 = 3 / 2
3 and 4 out of 5 = 19 out of 5
2 and 3 out of 7 = 17 out of 7
2 and 4 out of 9 = 22 out of 9
Two and a fifth times brackets one eleventh minus one thirty-three times one and a half
2 and 1 / 5 × (1 / 11-1 / 33 × 1 and 1 / 2)
=2 and 1 / 5 × (1 / 11-1 / 22)
=11/5×1/22
=1/10
5 times (minus one and a half) minus (minus six) times (minus one and a half) minus one and a half
5 times (minus one and a half) minus (minus six) times (minus one and a half) minus one and a half
=5 × (- 3 / 2) - (- 6) × (- 3 / 2) - 3 / 2 [extraction (- 3 / 2)]
=(- 3 / 2) × (5 + 6 + 1)
=(- 3 / 2) × 12
=-18
When 1 - is less than X and less than 3, the absolute value of 2 times x + 1 is reduced to the absolute value of - 3 times x-3 plus the absolute value of 2x + 4
-1
If x is less than 2, the absolute value of X-2 plus the absolute value of 2 + X is reduced
X
RELATED INFORMATIONS
- 1. For example, the converse of the following proposition is a false proposition 1. If one digit of an integer is 5, then the integer can be divided by 5 2. If both angles are right angles, then the two angles are equal
- 2. If six digit a2875b is divisible by 99, then two digit AB is ()
- 3. Six digit 2003? Can be divided by 99, how many are its last two digits?
- 4. If a six digit 2009 () can be divided by 105, what are the last two digits
- 5. From the four numbers of 2345, put them back three times, take any number each time, and find the probability that the product of the three numbers obtained can be divided by 10
- 6. The probability that the sum of 3 numbers can be divided by 3
- 7. (1) If one number is randomly selected from the 100 integers 1-100, the probability that the number can be divided by 8 is zero (2) If you toss an even coin twice at will, the probability that at least one coin will face up is zero (3) If you throw two dice at will, the probability that the sum of points is greater than 8 is 0 (4) At present, there are 7 playing cards, 2 of which are "King". After washing, randomly select 2 of them, and the probability of drawing at least 1 trump card is 0
- 8. Write the numbers 1, 2, 3, 4 and 5 on the five cards, then mix them and arrange them into a line. The probability that the number can be divided by 2 or 5 is zero___ ．
- 9. Write the numbers 1, 2, 3, 4 and 5 on the five cards, then mix them and arrange them in a row. The probability that the five digits can be divided by 5 or 2 is () A. 0.8B. 0.6C. 0.4D. 0.2
- 10. What is the probability that all three digits can be divided by 3 or 5?
- 11. The greatest common factor of two numbers must be divisible by these two numbers, right Please explain why
- 12. What are the characteristics of 7'11'13?
- 13. Integral division of mathematical problems There are five numbers of 0, 1, 4, 7 and 9 to form different four digit numbers. If you arrange the four digit numbers that can be divided by 3 from small to large, what is the fifth one
- 14. On the integral division of numbers There are three kinds of things a, B, and C, 88, 554, and 147 respectively. After the average distribution to xiaopenyou, the remaining B is three times as much as a, and C is two times as much as a. how many xiaopenyou are there?
- 15. 500 soldiers in a row. For the first time, 1, 2, 3, 4, 5 (1-5) from left to right; for the second time, 1, 2, 3, 4, 5, 6 (1-6) from right to left. How many soldiers reported 1 and 6?
- 16. How to calculate the density of iron plate? Or how much is the density of iron plate?
- 17. How to calculate the weight of a 4 mm subway slab with a length of 10 meters and a width of 10 meters?
- 18. What is the biggest difference between galvanized sheet with and without zinc flower?
- 19. How to calculate log2 ^ x * log2 ^ 2x = 2
- 20. In the sequence {an}, A1 = 1, a (n + 1) = 5 / 2-1 / an. Let BN = 1 / (An-2), find the general term formula of {BN} (2) let CN = - 3N * BN, find the sum of the first n terms of {cn}