Question: Question 1 Write a function to check whether a user is valid user or not. If user is valid user then a welcome message should

Question 1
Write a function to check whether a user is
valid user or not. If user is valid user then a
welcome message should display with a token
number. Token number will be generated based
on first palindrome number of N digits.
If the user is not valid user then the function
should display "UserId or password is not valid,
pls try again.".
All valid User-id and password should be stored
in an array like below :-
 Question 1 Write a function to check whether a user is

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