Maths-
General
Easy

Question

Let A be a set containing 10 distinct elements, then the total number of distinct functions from A to A is-

  1. 10 factorial    
  2. 10 to the power of 10 end exponent    
  3. 2 to the power of 10 end exponent    
  4. 2 to the power of 10 end exponent minus 1    

hintHint:

First, from the given that we have” A” be a set containing 10 distinct elements. Distinct elements mean all the elements in that function are different elements, which means no identical elements.
We also need to know about the concept of domain and co-domain as well, which is also known as the mapping in the range functions.

The correct answer is: 10 to the power of 10 end exponent


    Complete step-by-step solution:

    Since from the given question, we have A be a set containing 10 distinct elements and the total number of distinct functions from A to A is the requirement.
    Let us assume the set A with the elements like A subscript 1 comma space A subscript 2 comma space......... comma space A subscript 10
    Then by using the function definition of the domain and co-domain we have a function from A to A which means itself : f left parenthesis A subscript m right parenthesis space equals space A subscript m where m and n are the ranges from 1,2, ...... 10
    Therefore, the total number of distinct function for  number  1 is 1,2, ...... 10( it can be represented in any ten numbers) and the number 2 is 1,2, ..... 10 and proceeding like this we also get the number 10 as 1,2, ..... 10
    Thus, we get for all the  ten numbers we have 1, 2, ..... 10
    Hence we have in total
    10 space cross times space 10 space cross times 10 space cross times space 10 space cross times 10 space cross times space 10 space cross times 10 space cross times space 10 space cross times 10 cross times 10 space equals space space 10 to the power of 10 space w a y s.


     
     

    The domain is defined as the set which is to input in a function. We say that input values satisfy a function. The range is defined as the actual output supposed to be obtained by entering the domain of the function.
    Co-domain is defined as the values that are present in the right set that is set Y, possible values expected to come out after entering domain values.

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