Is the hundredths digit of the decimal d greater than 5?

(1) The tenths digit of 10d is 7
(2) The thousandths digit of d/10 is 7

My question is are we supposed to think that when it is said decimal it in the form of 0.xyzabc....???
I want to know if i can say 1000.2394879324 a decimal....

Can someone clarify??

Thanks bunuel,
But what if the decimal
d=72121.212121
d/10 = 7212.12121
in this case with statement 2, the thousands digit is 7 but that information is not enough to find out the hundredth digit... please correct me where i am wrong...
Thank you very much for the reply

Oh my GOD....
This is first time i have paid attention to this term thousands and thousanths

In the decimal abcd.xyz, x is the tenths digit, y is the hundredths digit, and z is the thousandths digit.

Once you know how the digits after the decimal point are named this is an easy one.

Statement 1: If the tenths digit of 10d is 7, then the hundredths digit of d is 7, which is more than 5. Sufficient.

Statement 2: The thousandths digit of d/10 is the same as the hundredths digit of d, which is 7 and more than 5. Sufficient.

(D) it is.
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Let the number be '0.abc' where a, b and c are the tenths, hundredths and thousandths digits respectively of the number.
d = 0.abc

Statement 1:
10d = a.bc. This statement tells us that b = 7. Thus, in the original number d, b (hundredths digit) is 7. SUFFICIENT.

Statement 2:
d/10 = 0.0abc. This statement tells us again that b = 7. Thus, in the original number d, b (hundredths digit) is 7. SUFFICIENT.

Thus the answer is D.
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everything is clear..great explanation..like always

Nope. In 1234.567 the units digit is 4 (the first digit to the left of decimal point) and the tenths digit is 5 (the first digit to the right of decimal point).
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Forget conventional ways of solving math questions. In DS, Variable approach is the easiest and quickest way to find the answer without actually solving the problem. Remember equal number of variables and independent equations ensures a solution.

Is the hundredths digit of the decimal d great than 5?
1) The tenths digit of 10d is 7.
2) The thousandths digit of d/10 is 7.

There is one variable (d) and 2 equations are given by the conditions, so there is high chance (D) will become the answer.
For condition 1, the hundredth digit of d=7. This is unique and the condition is hence sufficient
For condition 2, the hundredth digit of d=7. This is unique and the condition is hence sufficient
1)=2), and the answer hence becomes (D).

For cases where we need 1 more equation, such as original conditions with “1 variable”, or “2 variables and 1 equation”, or “3 variables and 2 equations”, we have 1 equation each in both 1) and 2). Therefore, there is 59 % chance that D is the answer, while A or B has 38% chance and C or E has 3% chance. Since D is most likely to be the answer using 1) and 2) separately according to DS definition. Obviously there may be cases where the answer is A, B, C or E.
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Hello Bunuel!

If 1 is THOUSANDS,
What is '0' and '-1'?

Also, if 7 is THOUSANDTH,
What is '8' and '9'?



It might be negligible, but I want to know.
Thanks!

Thanks, this "Before THOUSANDS is TEN THOUSANDS, and after THOUSANDTH is ten thousandth" was what I needed.