The answer is 5,180! I used a calculator
9514 1404 393
Answer:
120
Step-by-step explanation:
The number of permutations of 5 things taken 4 at a time is 120.
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There are 5 odd digits. You want to choose 4 of them, then arrange those 4 in all possible ways. There are 5·4·3·2 = 120 ways to do that.
120 4-digit codes can be formed using odd digits with no repetition.
Answer:
The result of the integral is 
Step-by-step explanation:
We are given the following integral:

I am going to solve by substitution, using
, so
. So, we have

Which has the following result:

Going back to x, the result of the integral is

15·x²=15·x so
x²=x
x·x=x with x≠0 than x must be 1
x=1