What are the possible values of remainder r, when a positive integer is divided by 2

What are the possible values of remainder r, when a positive integer a is divided by 3?

When a certain positive integer P is divided by another positive integer, the remainder is r_1 When a second positive integer Q is divided by the same integer, the remainder is r_2 and when (P + Q) is divided by the same divisor, the remainder is r_3dot Then the divsor may be r_1 r_2 r_3 (b) r_1+r_2+r_3 (c) r_1-r_2+r_3 (d) r_1 +r_2-r_3 (e) C a nnot b e d e t e r m in e d

When the integer n is divided by 2, the quotient is u and the remainder is 1. When the integer n is divided by 5, the quotient is v and the remainder is 3. Which one of the following must be true?

A positive integer when divided by 88 gives the remainder 61. What will be the remainder when the same number is divided by 11?

A positive integer when divided by 425 gives a remainder 45. When the same number is divided by 17, the remainder will be

A positive integer when divided by 425 gives a remainder 45. When the same number is divided by 17, the remainder will be

The digits of a positive integer n are four consecutive integers in decreasing order when read from left to right. What is the sum of the possible remainders when n is divided by 37 ?