GMAT EXAM REVIEW QUESTIONS WITH CORRECT ANSWERS

GMAT EXAM REVIEW QUESTIONS WITH CORRECT ANSWERS A prime number is a positive integer with only two different positive divisors, 1 and itself. 2, 3, 5, 7, 11. 1 is not a prime number because it only has 1 divisor. Every number > 1 is either prime or a can be shown as a product of prime numbers. Consecutive integers are all in a row. n, n+1, n+2, etc. Consecutive even integers= 2, 4, 6, 8. 2n, 2n+2, 2n+4, etc. Consecutive odd integers= 1, 3, 5, 7. 2n+1, 2n+3, etc. If n is any number then 1 x n = n. If n is not 0 then n x 1/n=1. 0 is neither positive nor negative. Cant divide by 0. Fractions - Answer-Denominator can never be 0. Two fractions are equivalent if they represent the same number. Fractions can be reduced to their lowest terms by dividing the num and denom by their greatest common divisor. Adding/subtracting fractions: Fractions with the same denom can be added or subtracted through the numerators, leaving the denom the same. If the denom isn't the same, make it the same by expressing them as equivalent fractions w the same denom. Multiply by the least common multiple to do this.