Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized for You
we will pick new questions that match your level based on your Timer History
Track Your Progress
every week, we’ll send you an estimated GRE score based on your performance
Practice Pays
we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
Your score will improve and your results will be more realistic
Is there something wrong with our timer?Let us know!
Re: A is the tens digit and B is the units digit of the produ
[#permalink]
10 Dec 2019, 10:09
IshanGre wrote:
I solved this question by multiplying 45 and 89 and hence got 4005- which has 0 as tenth and 5 as unit digit which is equal to 0 hence A.
Caution: Look at the highlighted word above. Be careful about it, it's tens, not tenth. There is a tremendous difference between tens and tenth.
The number 78.304 has a "7" in the tens place, an "8" in the ones place, a "3" in the tenths place, a "0" in the hundredths place, and a "4" in the thousandths place.
Re: A is the tens digit and B is the units digit of the produ
[#permalink]
03 May 2020, 02:34
IshanGre wrote:
I solved this question by multiplying 45 and 89 and hence got 4005- which has 0 as tenth and 5 as unit digit which is equal to 0 hence A.
How do we know that taking just the last 2 digits of each number can give us a reliably correct corresponding units and tens digit for the whole numbers multiplied? Can someone clarify if this is a mathematical property being used?
I used the traditional matrix method for multiplying the two numbers, BUT JUST FOR LAST 2 DIGITS and ignoring the rest. 12345 x6789 ______ x x x x 5 x x x 0 0 x x 5 0 0 x 0 0 0 0 __________ x 0 5 0 5
gmatclubot
Re: A is the tens digit and B is the units digit of the produ [#permalink]