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GMAT Prep - Math
Arithmetic
Question | Answer |
---|---|
True or false - Addition and multiplication are commutative, but subtraction and division are not. | True |
True or false - Addition and multiplication are not associative, but subtraction and division are. | False |
(5 + 8 = 5 + 8) or (2 X 12 = 12 X 2) is an example of a _________ law. | Commutative |
(19+3) + 45 = 45 + (19+3) or (10 X 2) X 4 = 10 X (2X4) is an example of a _________ law. | Associative |
True or false = (9/[4+5]) equals to (9/4) + (9/5). | False |
When there's a sum or a difference in the DENOMINATOR, is it possible to make distribution? | No |
When there's a sum or a difference in the NUMERATOR, is it possible to make distribution? | Yes |
(2^2) X (2^3) = | 2^5 |
(3^9) X (3^12) = | 3^21 |
(4^4)/(4^2) = | 4^2 |
(4^52)/(4^36) = | 4^16 |
(5^2)^3 = | 5^6 |
(12^12)^5 = | 12^60 |
(5^7) X (2^7) = | 10^7 |
(3^4) X (5^4) = | 15^4 |
(8)^(2/3) = | 4 |
(25)^(3/2) = | 125 |
The radical means _________ square root only. | Positive |
True or false - The radical can be a NEGATIVE square root as well. | False |
6 sq rt (3) X 5 sq rt (5) = | 30 sq rt (15) |
10 sq rt (9) / 5 sq rt (3) = | 2 sq rt (3) |
24 sq rt (108)/ 12 sq rt (12) | 2 sq rt (9) => 6 |
True or false - You CANNOT split addition underneath the radical sign. | Yes |