What is the least multiple of 7, which when divided by 6, 9, 15 and 18 leaves a remainder of 4?

What is the least natural number which when divided by 8, 12, 15 or 16 leaves a remainder of 7?

What is the least number which, when divided by 5,6,8 and 10, leaves a remainder of 2 in each case?

What is the least number which when divided by 8, 12 and 16 leaves 3 as the remainder in each case, but when divided by 7 leaves no any remainder?

What is the least number which when divided by 7,9, and 12 leaves the same remainder 1 in each case?

What is the sum of digits of the least multiple of 13, which when divided by 6, 8 and 12 leaves 5, 7 and 11 respectively as the remainders ?