
    Write a function to determine if a student has demonstrated complete mastery of a specific knowledge area by checking if all bits are unset (indicating no errors) within a given range of their assessment results. The assessment results are represented as a binary number where each bit position corresponds to a specific concept, and the range defines the subset of concepts being evaluated for mastery.
    

    
def all_Bits_Set_In_The_Given_Range(n, l, r):
    """
    Write a function to determine if a student has demonstrated complete mastery of a specific knowledge area by checking if all bits are unset (indicating no errors) within a given range of their assessment results. The assessment results are represented as a binary number where each bit position corresponds to a specific concept, and the range defines the subset of concepts being evaluated for mastery.
    

    """
def all_Bits_Set_In_The_Given_Range(n, l, r):
    """
    Write a function to determine if a student has demonstrated complete mastery of a specific knowledge area by checking if all bits are unset (indicating no errors) within a given range of their assessment results. The assessment results are represented as a binary number where each bit position corresponds to a specific concept, and the range defines the subset of concepts being evaluated for mastery.
    

    """
    num = (1 << r) - 1 ^ (1 << l - 1) - 1
    new_num = n & num
    if new_num == 0:
        return True
    return False