# Arup Guha
# 3/5/2022
# Solution to 2022 UCF HS Problem: Campus Parade

# Get number of cases.
nC = int(input())

# Go through each case.
for loop in range(nC):

    # Get 2 numbers into a list.
    nums = [int(x) for x in input().split()]

    # Gives a 0 based answer, so we add 1.
    res = nums[1]%nums[0] + 1

    # Ta da!
    print(res)