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y = (23)(24)(25)(26)(27)

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Carcass
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y = (23)(24)(25)(26)(27) [#permalink] New post   30 Nov 2020, 08:05
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\(y = (23)(24)(25)(26)(27)\)


Quantity A
Quantity B
The units digit
0




A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.

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C
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Re: y = (23)(24)(25)(26)(27) [#permalink] New post   30 Nov 2020, 12:03
1
Carcass wrote:
\(y = (23)(24)(25)(26)(27)\)


Quantity A
Quantity B
The units digit
0




A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.

Kudos for the right answer and explanation


y = (23)(24)(25)(26)(27)

Since (24)(25) evaluates to be some number with units digit 0, it doesn't matter what the other integers are.
The units digit is guaranteed to be 0

Answer: C
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Re: y = (23)(24)(25)(26)(27) [#permalink] New post   05 Dec 2020, 20:31
1
Given that Y= (23)(24)(25)(26)(27)
And
Quantity A Unit digit of Y
Quantity B (0).
To determine the unit digit of any number, we need to work only with the unit digits
so in this case you will multiply the unit digit of each number
3*4*5*6*7= it will give number with unit digit of (0)
Thus; Y's unit digit must be (0)
Answer is C
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Re: y = (23)(24)(25)(26)(27) [#permalink] New post   23 Dec 2020, 02:02
1
There's also another rule to make sure whether or not the unit digit is 0 which is called (5*2) pair. If you find one pair of 5 and 2 that means the number ends with 0 for sure!
In this question 25 and 24 provide the minimum requirement of 5*2 pair, as Brent mentioned above.
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Re: y = (23)(24)(25)(26)(27) [#permalink] New post   02 Jan 2021, 03:18
1
Simply try to find a 5 and a 2 in the units digit.
We have two options here, 4*5 or 5*6, pick your jam.
Now that we have a 0, ignore everything else and just compare with the other value given.

Here, Qa=Qb ; C is the answer.
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y=23*24*25*26*27 [#permalink] New post   16 Jan 2024, 03:08
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\(y=23*24*25*26*27\)


Quantity A
Quantity B
The unit digit
0



A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.



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y=23*24*25*26*27 [#permalink] New post   30 Jan 2024, 21:05
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The answer is C.

y has two even numbers, so it is a multiple of 2. Y is also a multiple of 25, so it is a multiple of 5 as well. Since it is a multiple of 5*2, it has to end with a zero.
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