multiplication rules for odd and even numbers - Correct Answer: even x even = even even x odd = even odd x odd = odd addition rules for odd and even numbers - Correct Answer: even + even = even even + odd = odd odd + odd = even how many data sufficiency problems are there? - Correct Answer: 15 how many problem-solving questions are there? - Correct Answer: 22 Area =? - Correct Answer: Length X Width What is the Kaplan method for problem solving? - Correct Answer: 1. Analyze the question 2. State the task 3. Approach strategically 4. Confirm your answer GMAT list the prime numbers to 50 - Correct Answer: 2, 3, 5, 7, 11, 13, 17, 19, 29, 31, 37, 41, 43, 47 (x+y)(x-y) - Correct Answer: x² - y² (x^a)^b - Correct Answer: x^ab x^a x x^b - Correct Answer: x^(a+b) 1/9 (what's the decimal?) - Correct Answer: 0.11111 1/7 (what's the decimal?) - Correct Answer: 0.1428 how do you solve an equation in absolute signs? e.g. |4x - 2| = 10 - Correct Answer: (4x - 2) = 10 AND (4x - 2) = -10 how do you solve an inequality in absolute signs? e.g. |4x - 2| < 10> -10 divisibility test for 7 - Correct Answer: separate the units digits from the rest of the number, then multiply that unit digit by 2. subtract from what's left of the GMAT original number. if the result is a multiple of 7 or 0, the original number is a multiple of 7. a^b x a^c = - Correct Answer: a^(b+c) a^b / a^c = - Correct Answer: a^(b-c) a^(-b) = - Correct Answer: 1 / (a^b) raising a positive fraction less than 1 to a positive exponent greater than 1 results in a ____ value. the higher the exponent, the ___ the result. - Correct Answer: smaller value, smaller when a negative number is raised to an even exponent, the result is... - Correct Answer: positive when a negative number is raised to an odd exponent, the result is - Correct Answer: negative √ab = ? - Correct Answer: (√a) x (√b) √(a/b) = - Correct Answer: (√a) / (√b) GMAT √(a+b) ≠ - Correct Answer: (√a) + (√b) √(a−b) ≠ - Correct Answer: (√a) - (√b) (√a)² = - Correct Answer: a √a - Correct Answer: a^(1/2) Even x any number = - Correct Answer: Even Even ± Odd = - Correct Answer: Odd Odd ± Odd = - Correct Answer: Even Even ± Even = - Correct Answer: Even Even^(positive integer) = - Correct Answer: Even odd^(positive integer) = - Correct Answer: odd