Errata – Advanced GMAT Quant, 1st Edition
Cover for 1st Edition
Release Date:
May 31, 2011
1.0
| Page | Loc | Description | Erroneous Text | Correction |
|---|---|---|---|---|
| 86 | Top | In the explanation of #3, the diagram mistakenly circled answer choice A. The correct answer is D, and the letter D should be circled. | ||
| 89 | Bot | The first line of the middle column in the table is incorrect. It should say “If y > 0:” | If y < 0: | If y > 0: |
| 91 | Top | Number testing for Statement 1, 2!/2! is not a valid example, because y must be positive. However, if y = 2 and x = 4, then (y + 2)!/x! = 4!/4! = 1, so the statement is still insufficient. | ||
| 96 | Mid | Incorrect numbers used in the explanation of statment (1) from Try-It #4-1 | For example, if a = 1 and b = 2, then ab = 2, and if a = 2 and b = 3, then ab = 6. | For example, if a = 2 and b = 1, then ab = 2, and if a = 3 and b = 2, then ab = 6. |
| 97 | Mid | In the first paragraph under the heading “Extract the Equation.” | It is very easy to get lazy intellectually… | It is very easy to get intellectually lazy… |
| 98 | Top | The explanation for Statement 2 in question 4-2 gives an incorrect number of Bravos sold. | If there were 40 Alphas sold, there were 10 Bravos sold. | If there were 40 Alphas sold, there were 5 Bravos sold. |
| 106 | Bot | In “Try-It #4-9,” statement 1 is incorrectly written. It should say that “a” is equal to “b^2.” | (1) a^2 = b^2 | (1) a = b^2 |
| 151 | Mid | Question #4 should state that y is a positive integer. The way the question is currently worded, the answer should be E. | What is the units digit of y? | What is the units digit of positive integer y? |
| 168 | Mid | The middle term in question #22 should be 12xy, NOT 12x. | 4x^2 – 12x + 9y^2 | 4x^2 – 12xy + 9y^2 |
| 169 | Top | The explanation for question #1 incorrectly translates the original question. (5^[3/2])^x became (5^[2/3])^x. The correct answer should be x = 2/3. |
5^(2x/3) = 5
2x/3 = 1 x = 3/2 |
5^(3x/2) = 5
3x/2 = 1 x = 2/3 |
| 171 | Bot | The final product in question #27 is incorrect. | (350 + 320)(350 – 320) = (670)(30) = 2,010 | (350 + 320)(350 – 320) = (670)(30) = 20,100 |
| 221 | Bot | Question #7 should specify that m and n are positive. | ||
| 256 | Mid | The figure for #104 is missing. |
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| 258 | Top | The figure for #111 is missing. |
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| 263 | Bot | Question #135 should stipulate that y is a positive integer. | If y^4 is divisible by 60, what is the minimum number of distinct factors that y must have? | If y^4 is divisible by 60, what is the minimum number of distinct factors that positive integer y must have? |