multiplication rules for odd and even numbers
even x even = even
even x odd = even
odd x odd = odd
addition rules for odd and even numbers
even + even = even
even + odd = odd
odd + odd = even
how many data sufficiency problems are there?
15
how many problem solving questions a...
multiplication rules for odd and even numbers - ANSWER even x even = even
even x odd = even
odd x odd = odd
addition rules for odd and even numbers - ANSWER even + even = even
even + odd = odd
odd + odd = even
how many data sufficiency problems are there? - ANSWER 15
how many problem-solving questions are there? - ANSWER 22
Area =? - ANSWER Length X Width
What is the Kaplan method for problem solving? - ANSWER 1. Analyze the question
2. State the task
3. Approach strategically
4. Confirm your answer
list the prime numbers to 50 - ANSWER 2, 3, 5, 7, 11, 13, 17, 19, 29, 31, 37, 41, 43, 47
(x+y)(x-y) - ANSWER x² - y²
(x^a)^b - ANSWER x^ab
x^a x x^b - ANSWER x^(a+b)
1/9 (what's the decimal?) - ANSWER 0.11111
1/7 (what's the decimal?) - ANSWER 0.1428
how do you solve an equation in absolute signs?
e.g. |4x - 2| = 10 - ANSWER (4x - 2) = 10
AND
(4x - 2) = -10
how do you solve an inequality in absolute signs? e.g. |4x - 2| < 10 - ANSWER (4x - 2) <
10
AND
(4x - 2) > -10
divisibility test for 7 - 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 original number. if the
result is a multiple of 7 or 0, the original number is a multiple of 7.
, GMAT
a^b x a^c = - ANSWER a^(b+c)
a^b / a^c = - ANSWER a^(b-c)
a^(-b) = - 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. - ANSWER smaller value,
smaller
when a negative number is raised to an even exponent, the result is... - ANSWER
positive
when a negative number is raised to an odd exponent, the result is - ANSWER negative
√ab = ? - ANSWER (√a) x (√b)
√(a/b) = - ANSWER (√a) / (√b)
√(a+b) ≠ - ANSWER (√a) + (√b)
√(a−b) ≠ - ANSWER (√a) - (√b)
(√a)² = - ANSWER a
√a - ANSWER a^(1/2)
Even x any number = - ANSWER Even
Even ± Odd = - ANSWER Odd
Odd ± Odd = - ANSWER Even
Even ± Even = - ANSWER Even
Even^(positive integer) = - ANSWER Even
odd^(positive integer) = - ANSWER odd
define a prime number - ANSWER positive integer greater than 1 that is divisible only
by 1 and itself
if given a rectangle's area and perimeter... - ANSWER find area's factors and see which
ones add up to perimeter ÷ 2
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