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gmatophobia cant see answer ...when clicking on show spoiler it shows OA
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@GMATOPHOBIA cant see answer ...when clicking on show spoiler it shows OA
Ah ! I there is some issue. Thanks for reporting this.

The OA for all questions posted yesterday is E :lol:

PS Question - Dec 1

What is the range of the prime factors of m, if m = 2^5 * 3^11 - 9^6 - 3^11 ?

A. 0
B. 1
C. 2
D. 4
E. 5

Source: GMAT Club Tests | Difficulty: Medium
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PS Question - Dec 1

What is the range of the prime factors of m, if m = 2^5 * 3^11 - 9^6 - 3^11 ?

A. 0
B. 1
C. 2
D. 4
E. 5

Source: GMAT Club Tests | Difficulty: Medium
simplification of m gives (3^11 * 7 * 2^2 ), so range of prime factors is 5
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DS Question 1 - Dec 1

Company Z only sells chairs and tables. what percent of its revenue in 2008 did company derive from its sales of tables?

(1) In 2008, the average price of tables sold by company Z was 10% higher than the average price of chairs sold by Company Z?
(2) In 2008, Company Z sold 20% fewer tables than chairs.

Source: Manhattan | Difficulty: Medium
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DS Question 1 - Dec 1

Company Z only sells chairs and tables. what percent of its revenue in 2008 did company derive from its sales of tables?

(1) In 2008, the average price of tables sold by company Z was 10% higher than the average price of chairs sold by Company Z?
(2) In 2008, Company Z sold 20% fewer tables than chairs.

Source: Manhattan | Difficulty: Medium
C

gmatophobia
PS Question - Dec 1

What is the range of the prime factors of m, if m = 2^5 * 3^11 - 9^6 - 3^11 ?

A. 0
B. 1
C. 2
D. 4
E. 5

Source: GMAT Club Tests | Difficulty: Medium
E
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DS Question 2 - Dec 1

A number of oranges are to be distributed evenly among a number of baskets. Each basket will contain at least one orange. If there are 20 oranges to be distributed, what is the number of oranges per basket?

(1) If the number of baskets were halved and all other conditions remained the same, there would be twice as many oranges in every remaining basket.

(2) If the number of baskets were doubled, it would no longer be possible to place at least one orange in every basket.

Source: Manhattan | Difficulty: Hard
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DS Question 2 - Dec 1

A number of oranges are to be distributed evenly among a number of baskets. Each basket will contain at least one orange. If there are 20 oranges to be distributed, what is the number of oranges per basket?

(1) If the number of baskets were halved and all other conditions remained the same, there would be twice as many oranges in every remaining basket.

(2) If the number of baskets were doubled, it would no longer be possible to place at least one orange in every basket.

Source: Manhattan | Difficulty: Hard
E
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DS Question 2 - Dec 1

A number of oranges are to be distributed evenly among a number of baskets. Each basket will contain at least one orange. If there are 20 oranges to be distributed, what is the number of oranges per basket?

(1) If the number of baskets were halved and all other conditions remained the same, there would be twice as many oranges in every remaining basket.

(2) If the number of baskets were doubled, it would no longer be possible to place at least one orange in every basket.

Source: Manhattan | Difficulty: Hard
The 20 oranges are divided evenly into baskets. This means there are either 1,2,4,5,10, or 20 baskets.

1) has many possible cases. For example if there was 10 baskets and we halved, or 4 baskets and we bavled. Insuff.
2)
The only possible case where there are more baskets per orange if the baskets are doubled is if the initial baskets are 20.

B.
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Hi. We’ve had some issues with spoilers working in the chat. We have fixed it. You may need to refresh your browser or app… which I’m not really sure how to refresh the app😂 but even without refreshing, I can see I can make it work by tapping a few times on the spoiler

Sorry about the trouble 😇
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PS Question - Dec 1

What is the range of the prime factors of m, if m = 2^5 * 3^11 - 9^6 - 3^11 ?

A. 0
B. 1
C. 2
D. 4
E. 5

Source: GMAT Club Tests | Difficulty: Medium

gmatophobia
DS Question 1 - Dec 1

Company Z only sells chairs and tables. what percent of its revenue in 2008 did company derive from its sales of tables?

(1) In 2008, the average price of tables sold by company Z was 10% higher than the average price of chairs sold by Company Z?
(2) In 2008, Company Z sold 20% fewer tables than chairs.

Source: Manhattan | Difficulty: Medium

gmatophobia
DS Question 2 - Dec 1

A number of oranges are to be distributed evenly among a number of baskets. Each basket will contain at least one orange. If there are 20 oranges to be distributed, what is the number of oranges per basket?

(1) If the number of baskets were halved and all other conditions remained the same, there would be twice as many oranges in every remaining basket.

(2) If the number of baskets were doubled, it would no longer be possible to place at least one orange in every basket.

Source: Manhattan | Difficulty: Hard

PS Question 1 - Dec2

There are 7 red and 5 blue marbles in a jar. In how many ways 8 marbles can be selected from the jar so that at least one red marble and at least one blue marble is left in the jar?

A. 460
B. 490
C. 493
D. 445
E. 455

Source: GMAT Club Tests | Difficulty: Hard
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PS Question 1 - Dec2

There are 7 red and 5 blue marbles in a jar. In how many ways 8 marbles can be selected from the jar so that at least one red marble and at least one blue marble is left in the jar?

A. 460
B. 490
C. 493
D. 445
E. 455

Source: GMAT Club Tests | Difficulty: Hard
total ways of selection 12C8 = 495
we can subtract those cases where we are selecting red or blue in its entirety i.e. not leaving out even one of them behind
case1 - select all 7red and remaining 3 blue -> 7C7 * 5C1 = 5
case2 - select all 5 blue and remaining 3 red -> 5C5 * 7C3 = 35

so, favorable cases left = 12C8 - (35+5) = 455

so option E ... ?

**case1 - select all 7red and remaining 1 blue -> 7C7 * 5C1 = 5
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DS Question 1 - Dec 2

If m and n are positive integers, is n^m − n divisible by 6?

(1) m = 3
(2) n = 2

Source: Other (DS Butler) | Difficulty: Medium
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DS Question 1 - Dec 2

If m and n are positive integers, is n^m − n divisible by 6?

(1) m = 3
(2) n = 2

Source: Other (DS Butler) | Difficulty: Medium
A?
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DS Question 1 - Dec 2

If m and n are positive integers, is n^m − n divisible by 6?

(1) m = 3
(2) n = 2

Source: Other (DS Butler) | Difficulty: Medium
1 is suff. n^3-n, n(n^2-1), n(n-1)(n+1) 3 consecutive integers are divisble by 3!, which is =6.
2 is insuff. Can be any number

A.
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PS Question 1 - Dec2

There are 7 red and 5 blue marbles in a jar. In how many ways 8 marbles can be selected from the jar so that at least one red marble and at least one blue marble is left in the jar?

A. 460
B. 490
C. 493
D. 445
E. 455

Source: GMAT Club Tests | Difficulty: Hard
Ways to choose in total: 12c8=495
Ways to choose 5 blue and 3 red:
5c5=1
7c3=35
35
Ways to choose 7 red 1 blue
7c7
5c1=5
40 bad ways
495-40=455 total acceptable way.
E.
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PS Question 1 - Dec2

There are 7 red and 5 blue marbles in a jar. In how many ways 8 marbles can be selected from the jar so that at least one red marble and at least one blue marble is left in the jar?

A. 460
B. 490
C. 493
D. 445
E. 455

Source: GMAT Club Tests | Difficulty: Hard

gmatophobia
DS Question 1 - Dec 2

If m and n are positive integers, is n^m − n divisible by 6?

(1) m = 3
(2) n = 2

Source: Other (DS Butler) | Difficulty: Medium

DS Question 1 - Dec 03

What is the value of xy ?

(1) x + y = 7
(2) (x + 1)(y – 1) = 6

Source: GMATPrepNow | Difficulty: Medium
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DS Question 1 - Dec 03

What is the value of xy ?

(1) x + y = 7
(2) (x + 1)(y – 1) = 6

Source: GMATPrepNow | Difficulty: Medium
Neat question.
Both 1 and 2 are clearly insuff, there are infinite options for x and y
Going straight to 3
x+y=7, (x+1)(y-1)=6
x+y-1=6
(x+1)(y-1)=x+y-1
xy-2x=0
x(y-2)=0
If y is 2, x can be any (xy has infinite options)
if x is 0, y can be any (xy=0)
Insuff therefore E.
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