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first index greater than a number in.
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Here is a Python function to find first index greater than a number in a Python program

import numpy as np

def first_index_greater_than(number, array):
    """
    Returns the first index greater than a number in an array.
    """
    for i in range(len(array)):
        if array[i] > number:
            return i
    return -1

# Enter the array
array = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])

# Enter the number
number = 5

# Calling the function
print((first_index_greater_than(number, array)))

#Example Output
# 5

#Remember to inspect code for bugs.