Why 4 is used for solving questions using remainder theorem?

The number 4 is often used in solving problems with the Remainder Theorem because it represents a specific case where we evaluate polynomials at a given point. The Remainder Theorem states that when a polynomial ( f(x) ) is divided by ( x - c ), the remainder is ( f(c) ). By substituting ( c ) with 4, we can find the remainder of the polynomial when divided by ( x - 4 ). This is particularly useful in problems that require evaluating the polynomial at that specific point to determine the remainder.