mod = 1000000007
eps = 10**-9


def main():
    import sys
    input = sys.stdin.readline

    for _ in range(int(input())):
        n = int(input())
        if n == 1:
            print(10)
        else:
            print("9" + "0" * (n-1))


if __name__ == '__main__':
    main()