Practice One

Practice One

Question 1: How much three-digit number can we get from number 1,2,3,4 ? Here the three-digit number has no duplicate numbers and is not the same as each other.

Question 2 : How much three-digit number can we get from number 0,1,2,3 ? Here the three-digit number has no duplicate numbers and is not the same as each other.

Question 1: How much three-digit number can we get from number 1,2,3,4 ? Here the three-digit number has no duplicate numbers and is not the same as each other.
1
2
3
4
5
6
7
8
9
n = 0
for i in range(1,5):
    for j in range(1,5):
        for k in range(1,5):
            if i != j and j != k and i != k:
                a = 100*i + 10*j +k
                print(a)
                n += 1
print(n)
Question 2 : How much three-digit number can we get from number 0,1,2,3 ? Here the three-digit number has no duplicate numbers and is not the same as each other.

Hint : hundreds place must not be zero. 

1
2
3
4
5
6
7
8
9
10
n = 0
for i in range(0,4):
    for j in range(0,4):
        for k in range(0,4):
            if i !=0:
                if i != j and j != k and i != k:
                    a = 100*i + 10*j +k
                    print(a)
                    n += 1
print(n)
Python
Python mathematics

本博客所有文章除特别声明外，均采用 CC BY-SA 4.0 协议 ，转载请注明出处！