／(n+1)! Please be specific,

／(n+1)! Please be specific,

(n+1)!=1*2*3*…… *n*(n+1)=n!*(n+1)
n!／(n+1)!=1/(n+1)

Find the factorial of n Variable condition: n is a positive integer and N ≤ 1000 Run time: 1 second / test data Input format: only one number, n Output format: result of only one number, n Executable file: program1.exe Example 1: Input.txt Four Output.txt Twenty-four Example 2: Input.txt Fifteen Output.txt one trillion and three hundred and seven billion six hundred and seventy-four million three hundred and sixty-eight thousand

Recursion or loop
Only write algorithms, others add their own
/ / the last variable received is int
For (int i = n; I > 1; I --) / / be careful not to add semicolons here;
{
num = num*i;
}
Printf ("write it yourself here");
A little lazy. Hey, don't learn from me

It is known that A. B is a rational number. If a new operation symbol "(...) is defined, and a ＊ B = a + 2b is defined, then (1 ＊ 4) (- 2) =?)?

（1※4）※（-2）
=(1+2×4）※（-2）
=9※（-2）
=9+2×（-2）
=5

If we define an operation symbol, its meaning is: a ා B = 2a-3b-1. According to the meaning of this symbol, it is calculated as: 3 ා - 2) ා - 1

3#(-2)#(-1)=[2*3-3*(-2)-1]#(-1)=11#(-1)=2*11-3*(-1)-1=22+3-1=24

B is a rational number. If we define "a * b = a + 2B" with the Chinese and Western operation symbol "*", find the value of (1 * 4) * - 2)

Five

"△" is a symbol of operation, its meaning is: a △ B = 2a-b, if x △ (1 △ 3) = 2, then x is equal to () A. 1 B. 1 Two C. 3 Two D. 2

∵x△（1△3）=2，
x△（1×2-3）=2，
x△（-1）=2，
2x-（-1）=2，
2x+1=2，
∴x=1
2．

The calculation of the value △ of (9 △ 7) △ (5 △ 3) represents an operation symbol, and its meaning is a △ B = 2A

(9△7)△(5△3)
=(2*9-7)△(2*5-3)
=11△7
=(2*11-7)
=15

The operation rules for defining a symbol are The operation rule of defining a symbol "★" is: a ★ B = 2A + B trial calculation （1）5★3 （2） （1★7）★4 How to calculate the problem? The process and method of solving the problem are attached, I don't understand=

5&3=7=5+5-3=7
3&5=1=3+3-5=1
8&4=12=8+8-4=12
3&4=2=3+3-4=2
7&2=7+7-2=12

The operation rule of defining a symbol "is: ab = 2A + B, try to calculate (1). 53 (2). (17) 4

The first one: 2 * 5 + 3 = 13; the second: 2 * 1 + 7 = 9, converted into 2 * 9 + 4 = 22

If the meaning of symbol * is a * b = ab-2a + B of a + B, calculate the value of [2 * (- 3)] * (- 1) Come on

a*b=ab/(a+b)-2a+b
2*(-3)=2*(-3)/(2-3)-2*2+(-3)=6-4-3=-1
[2*(-3)]*(-1)=(-1)*(-1)
=(-1)*(-1)/(-1-1)-2*(-1)+(-1)
=-1/2+2-1
=1/2