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by sumasajja » Tue Jul 26, 2011 6:15 pm
a decrease of 1 in which of the factors would result in the greatest decrease in the product?
a]11
b]13
c]17
d]19
e]23
answer is a
Last edited by sumasajja on Tue Jul 26, 2011 7:44 pm, edited 2 times in total.
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by sumasajja » Tue Jul 26, 2011 7:25 pm
i could not figure out the answer ,,,,ca any1 please explain!!!
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by vineeshp » Tue Jul 26, 2011 7:32 pm
Yes.

They have called the 5 numbers the factors. The means, the question is essentially asking,

In a product, 11 * 13 * 17 * 19 * 23, reducing which of the 5 factors by 1 (11 to 10, 13 to 12.... )reduces the product.

Option A: 11
11 * 13 * 17 * 19 * 23 is now 10 * 13 * 17 * 19 * 23

So reduction is the difference (11-10) 1 * 13 * 17 * 19 * 23

Option B: 13
11 * 13 * 17 * 19 * 23 is now 11 * 12 * 17 * 19 * 23
Difference: 11 * 17 * 19 * 23
If you see this number is smaller than the difference above. In all other choices.. difference will keep reducing.

Hence the answer.
Vineesh,
Just telling you what I know and think. I am not the expert. :)
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Re: math

by TrentonCollier » Mon Jan 05, 2026 2:14 am
thank you
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Re: math

by fnfunkin » Wed Jul 15, 2026 1:08 am
Thank you for the detailed explanation.
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