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Aneet
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Practice Questions Chat Updated on: 09 Jul 2023, 23:26
Originally posted by Aneet on 09 Jul 2023, 23:25.
Last edited by Aneet on 09 Jul 2023, 23:26, edited 1 time in total.
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gmatophobia
DS Question - July 10 If x and y are non-zero integers and |x| + |y| = 32, what is xy? (1) -4x – 12y = 0 (2) |x| – |y| = 16 Source: Manhattan | Difficulty: Hard
192

Kenykruzy
-192 X=24 or-24 Y=-8 or 8 Xy=-8×24=-192 Or 8×-24=-192
Can’t be negative since both x and y are non negative
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Kenykruzy
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Practice Questions Chat 09 Jul 2023, 23:29
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Aneet
Can’t be negative since both x and y are non negative
It is negative sir
They said what is xy not |xy|
And you were given that
-4x=12y i.e
X=-3y so one of x or y has to be negative
Answer is -192 not 192
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Kenykruzy
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Practice Questions Chat 09 Jul 2023, 23:44
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Aneet
4
It’s 6
4
25×4
625×4
25
625
1
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Practice Questions Chat 09 Jul 2023, 23:46
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gmatophobia
PS Question - July 10 How many positive divisors of 12,500 are squares of integers (aka perfect squares)? A) three B) four C) six D) eight E) twelve Source: GMATPrepNow | Difficulty: Hard
12500= 2^2 * 5^5 (1 +1)*(2+1)= 2*3 = 6
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Practice Questions Chat 10 Jul 2023, 03:23
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At a photocopy center , the first 10 copies cost x taka each. Each of the next 50 copies costs 2 taka less per copy . From the 61 st copy on, the cost 1 Taka per copy, In terms of x how much does it cost in. Taka to have 200 copies made? explain this ans
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Practice Questions Chat Updated on: 10 Jul 2023, 07:33
Originally posted by fatema199 on 10 Jul 2023, 07:32.
Last edited by fatema199 on 10 Jul 2023, 07:33, edited 1 time in total.
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Asif purchased a ratio from a store and sold it to Rahim and made a profit of 20%. After few months, Rahim sold the same ratio to Fahad and incurred a loss of 15% . If Fahad bought the ratio for Tk. 510, What was the original price of the ratio? explain this math ans

Last week , Sohan’s hourly wage has been increased by 10percent. After this increase Sohan’s total wage tk. 1375 . If his weekly hours were to decrease by 10 percent from last week’s total hours, What would be the Sohan’s weekly wage? explain this math solve
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AbdullahQidwae
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Practice Questions Chat 10 Jul 2023, 07:46
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fatema199
Asif purchased a ratio from a store and sold it to Rahim and made a profit of 20%. After few months, Rahim sold the same ratio to Fahad and incurred a loss of 15% . If Fahad bought the ratio for Tk. 510, What was the original price of the ratio? explain this math ans
Asif purchased at x
Sold in 1.2 x
And then Fahad got loss of 1.2x * (.85) = 1.02 x
Then 1.02 x = 510,
Therefore , x = 600
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AbdullahQidwae
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Practice Questions Chat Updated on: 10 Jul 2023, 08:07
Originally posted by AbdullahQidwae on 10 Jul 2023, 08:01.
Last edited by AbdullahQidwae on 10 Jul 2023, 08:07, edited 1 time in total.
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fatema199
Last week , Sohan’s hourly wage has been increased by 10percent. After this increase Sohan’s total wage tk. 1375 . If his weekly hours were to decrease by 10 percent from last week’s total hours, What would be the Sohan’s weekly wage? explain this math solve
Let sohan hourly wage is x
And hours he work is y
Then , (1.1x) * y = 1375
So, x * y = 1250

Then next statement tells
(1.1x) * (0.9y) = 0.99 * xy
Therefore it is 1237.5

fatema199
At a photocopy center , the first 10 copies cost x taka each. Each of the next 50 copies costs 2 taka less per copy . From the 61 st copy on, the cost 1 Taka per copy, In terms of x how much does it cost in. Taka to have 200 copies made? explain this ans
This one goes with AP .. but I’m doubtful on this
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Practice Questions Chat 10 Jul 2023, 11:20
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With (1), we know that -x = 3y ie opposite signs. Substitute that into original equation, we will have 4|y| = 32. So y = +/- 8, thus x = +/- 24, and xy will be -192 regardless.
(2) only tells us 2|y| = 16, thus |x| = 24. but it doesnt give further information, thus unable to conclude x and y values without modulus
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Practice Questions Chat 10 Jul 2023, 12:57
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Could someone confirm the answer of the DS question (July 10)? In my opinion it’s -192 and at first I thought C is the correct answer since I first used both statements to arrive at the result. Then I noticed, that as stated by hazeljj 1 seems to be enough and actually A should be the correct choice.
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fatema199
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Practice Questions Chat 10 Jul 2023, 16:12
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The lengths of two sides of a triangle are 7 and 11. If the length of the third side is an integer, What is the least possible perimeter of the triangle? how i calculate this ans explain plz
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hazeljj
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Practice Questions Chat 10 Jul 2023, 16:49
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Razara
Could someone confirm the answer of the DS question (July 10)? In my opinion it’s -192 and at first I thought C is the correct answer since I first used both statements to arrive at the result. Then I noticed, that as stated by hazeljj 1 seems to be enough and actually A should be the correct choice.
if-x-and-y-are-non-zero-integers-and-x-y-32-what-is-128845.html

You may refer to this link for the answer, it’s A :)
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Practice Questions Chat 10 Jul 2023, 19:01
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fatema199
The lengths of two sides of a triangle are 7 and 11. If the length of the third side is an integer, What is the least possible perimeter of the triangle? how i calculate this ans explain plz
Length of any side of triangle is greater than difference of other two side and less than sum of other two side. Therefore, third side will be 4<side<18.
As the third side is an integer so the length of the side should be 5 so as to have least perimeter.

The answer should be 5+7+11= 23
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Practice Questions Chat 11 Jul 2023, 00:23
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Set x consist of integers 35,40,50,60,65. If integer p is added to the set X the average (A.M) of X will decrease by 10%. What is the value of p
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sid1609
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Practice Questions Chat 11 Jul 2023, 00:41
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The value of p will be 20
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Thapa
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Practice Questions Chat 11 Jul 2023, 00:43
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Can u explain by some steps
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sid1609
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Practice Questions Chat 11 Jul 2023, 00:53
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The average of the given set of integers is (35+40+50+60+65)/5 which is equal to 50. If the average decreases by 10% then the new avg becomes 50-5 I.e 45. Now the earlier sum (250 +p)/6 is the new avg which is equal to 45 . So 45*6 =250+p. So p=270-250 . Which comes out to be 20.
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Practice Questions Chat 11 Jul 2023, 01:09
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:thumbsup:

In a certain sequence, nth term for all n>=2 can be obtained by subtracting 4 from the preceding term. What is the median of the sequence?
(1) The third term is 101.
(2) The mean of the numbers in the sequence is 201.
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sid1609
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Practice Questions Chat 11 Jul 2023, 01:29
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If the series contain odd terms median should be 101 and if the series has even terms it should be 99.
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fatema199
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Practice Questions Chat 11 Jul 2023, 04:20
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If c and d are two integers and @ is defined in p an q as @ (p, q)=(p+1)(q+2), and @ (c, d) equals the product of 2 and 5, then what should be the value of c+d? explain ans plz
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