There are four students met, each 2 people shake a hand, a total of 10___ Times

There are four students met, each 2 people shake a hand, a total of 10___ Times

(4-1) × 4 / 2 = 12 / 2 = 6 (Times); a: a total of 6 times

How to solve this problem

Do you mean active and passive?
solve the problem
the problem be solved

Schematic of solar and lunar eclipses

Just look at this picture!

It is not only a multiple of 16, but also a factor of 12. The smallest one is ()

If that's right, it should be 48

1. Party A and Party B start to process a batch of parts at the same time, but no one processes half of the total number of parts. When Party A completes 1 / 3 of the task, Party B processes 45 parts, and when Party A completes 2 / 3, Party B completes half. How many parts are there in total?
2. For a project, Party A and Party B work together for 6 days to complete 5 / 6. For a single project, the time required for Party A to complete 1 / 3 is equal to that for Party B to complete 1 / 2?

1. Suppose that this batch of parts is m, the processing speed of Party A is ∨ 1, the processing speed of Party B is ∨ 2, the time taken by Party A to complete 1 / 3 of the task is T1, and the time taken by Party A to complete 3 / 5 of the task is T2

Simple calculation of (2-0.125) × 8?

(2-0.125)×8
=2×8-0.125×8
=16-1
=15

For quadratic function, the maximum value is 25 when x = 1 / 2, and the sum of two cubes equals 19 when f (x) = 0

y=ax^2+bx+c (-b/a)^2-2c/a=19
-b/2a=1/2,4ac-b^2/4a=25

In the face of the global financial crisis, a factory has decided to reduce the price of its products for two consecutive times
Scheme 1: first (99-p)%, second (101-p)%
Scheme 2: first (102-p)%, second (98-p)%
Scheme 3: first (100-p)%, second (100-p)%
Among them, 2 ＜ P ＜ 98, ask which of the three options has the most price reduction? (ask to leave the process) the answer is the second option, but the second option is not the least number, so it has the least price reduction?

Option 1
New price = (99-p) (101-p) = 9999-200p + P ^ 2
Option 2
New price = (102-p) (98-p) = 9996-200p + P ^ 2
Option 3
New price = (100-p) (100-p) = 10000-200p + P ^ 2
Therefore, among the three schemes, scheme 2 has the lowest price and the largest decline

If the domain of function y = f (x) is [0,2], then the domain of function g (x) = X-1 / F (2x) is,

Know from the title
2x∈[0,2]
And X-1 is not equal to 0
The solution shows that x belongs to [0,1]

Round to the nearest tent if necessary

If you need to keep one decimal place