What is the result of arr.index(5) if arr = [1, 3, 5, 7, 9]?Options204ValueError: 5 is not in list

What is the result of arr.remove(3) if arr = [1, 2, 3, 4, 3, 5]?Options[1, 2, 4, 5][1, 2, 4, 3, 5][1, 2, 4, 3, 4, 5] Error: 'list' object has no attribute 'remove'

Find which element and Indices are equal 3.5 marks Problem Statement You are given a function, def ElementsAndIndices(arr): The function takes an integer array 'arr' of size 'n' as its arguments. Implement the function to find and return the number of array elements which are equal to their index value in array i.e. arr[k] = k, 0 <= k < n. Note: Indexing starts from 0. Return -1 if 'arr' is empty or None in case of python Example: Input: 10 1 12 3 5 8 9 7 12 23 Output: 3 Explanation: Index Element 0 10 1 1 2 12 3 3 4 5 5 8 6 9 7 7 8 12 9 23 Elements at index {1, 3, 7} are equal to their index values {1, 3, 7} respectively. Since, these are 3 elements, thus, output is 3. The custom input format for the above case: 10 10 1 12 3 5 8 9 7 12 23 (The first line represents the size of the array, the second line represents the elements of the array) Sample input -3 0 1 3 5 7 Sample Output 1 The custom input format for the above case: 6 -3 0 1 3 5 7 (The first line represents the size of the array, the second line represents the elements of the array) Instructions : This is a template based question, DO NOT write the "main" function. Your code is judged by an automated system, do not write any additional welcome/greeting messages. "Save and Test" only checks for basic test cases, more rigorous cases will be used to judge your code while scoring. Additional score will be given for writing optimized code both in terms of memory and execution time. give java code

Example Array:arr =np.array([[1,2,3],[4,5,6],[7,8,9],[10,11,12]])Use the example array 'arr' to answer the following question:To select [4,5,6] from arr, we do _____.

What is the index of the first element in an array in Python?Options10-1Depends on the size of the array

What is the output of the following code?arr = numpy.array([numpy.arange(5), numpy.arange(1, 6)])arr A 2D array of numbers from 0 to 5 in the first row and 1 to 6 in the second row A 2D array of numbers from 0 to 4 in the first row and 1 to 6 in the second row A 2D array of numbers from 0 to 4 in the first row and 1 to 5 in the second row None of the above