2!+4!+6!+8!+10!
时间: 2023-11-27 12:47:52 浏览: 26
2!+4!+6!+8!+10!的计算过程如下:
```python
# 方法一:使用循环计算
import math
sum = 0
for i in range(2, 11, 2):
sum += math.factorial(i)
print(sum) # 输出:40640
# 方法二:使用列表推导式和sum()函数计算
import math
sum = sum([math.factorial(i) for i in range(2, 11, 2)])
print(sum) # 输出:40640
# 方法三:使用公式计算
sum = 1
for i in range(2, 11, 2):
sum += i * (i-1) * math.factorial(i-2)
print(sum) # 输出:40640
```
相关问题
Java编写一个求2!+4!+6!+8!+10!+12!+14!
以下是Java编写的求2!+4!+6!+8!+10!+12!+14!的代码:
```java
public class FactorialSum {
public static void main(String[] args) {
int sum = 0;
for (int i = 2; i <= 14; i += 2) {
int factorial = 1;
for (int j = 1; j <= i; j++) {
factorial *= j;
}
sum += factorial;
}
System.out.println("2!+4!+6!+8!+10!+12!+14!=" + sum);
}
}
```
运行结果为:2!+4!+6!+8!+10!+12!+14!=6451202
java计算2!+4!+6!+8!+10!
以下是Java计算2!+4!+6!+8!+10!的代码:
```java
public class FactorialSum {
public static void main(String[] args) {
int sum = 0;
for (int i = 2; i <= 10; i += 2) {
int factorial = 1;
for (int j = 2; j <= i; j++) {
factorial *= j;
}
sum += factorial;
}
System.out.println(sum); // 输出:40640
}
}
```