## number system

## SAT : Number properties question

If a, b, and c are positive integers and a is factor of b, then which of the following must be true? A. 2a = 4b B. bc > ac C. bc is multiple of a D. ac is factor of b E. ab is multiple of c

## SAT: Number properties Question.

If w, x, y and z are all integers greater than 2, which of the following greatest? A. x + yz + w B. ( x+ y) z + w C. x + y( z+ w) D. […]

## SAT Problem : What is the remainder?

When the positive integer x is divided by 9, the remainder is 5. What is the remainder when 3x is divided by 9? A.0 B.1 C.3 D.4 E.6