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X = (86)( 47)( 94)( 123)( 64)( 56)( 72)
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07 Apr 2019, 09:57
07 Apr 2019, 09:57
Expert Reply
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Question Stats:
72% (00:34) correct
27% (00:37) wrong based on 47 sessions
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\(X = (86)( 47)( 94)( 123)( 64)( 56)( 72)\)
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.
Quantity A |
Quantity B |
The unit digit of X |
5 |
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.
Re: X = (86)( 47)( 94)( 123)( 64)( 56)( 72)
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25 Apr 2019, 08:07
25 Apr 2019, 08:07
Hi all,
Is there a shortcut for this?
Is there a shortcut for this?
Re: X = (86)( 47)( 94)( 123)( 64)( 56)( 72)
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25 Apr 2019, 11:29
25 Apr 2019, 11:29
1
Just multiply the units digits for the first two, and look at the units digit of the product, 2. Then 2*4 = 8, 8*3 =24, units digit is 4, etc.
