If N is a positive integer, what is the tens digit of N?

Question

(1) N is divisible by 25.

(2) N is divisible by 16.

nipunjain14 · Accepted Answer

St1 : number can be 25, 50 etc

InSufficient

St2: number can be 16, 32 etc
Insufficient

St1 & St 2
finding LCM of 16 and 25 = 400

so all multiple of 400 will be : 400 , 800, 1600
tens digit is = 0

Ans: C

stonecold · Answer

Here is my approach => 
statement 1 tells us Unit digit can be 0 or 5 => not sufficient 
statement two tells us the unit digits must be even => not sufficient 
Combining them => unit digits must be zero => C is sufficient

TeamGMATIFY · Answer

Given : N > 0 and integer
 Required : Tens digit of N?

Statement 1 : N is divisible by 25
N = 25 or 50
Hence we cannot tell the tens digit.
INSUFFICIENT

Statement 2 : N is divisible by 16
N = 16 or 32
We cannot tell the tens digit
INSUFFICIENT

Combining Statement 1 and Statement 2 : 
N is a multiple of both 16 and 25
Hence N is a multiple of 400
N = 400, 800, ...
In all the cases, the tens digit will be 0
SUFFICIENT

Option C

stonecold · Answer

Here Clearly 1 and 2 statement are not sufficient as there are numerous values.
combining the we can say that tens digit will be 0
hence C

SchruteDwight · Answer

The question, however, asks for the  tens  digit.

AnirudhaS · Answer

This is incorrect way of solving the problem. The tens digit for Statement (1) can be 0,2,5 or 7. 
The unit digit is inconsequential in this problem.

bumpbot · Answer

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If N is a positive integer, what is the tens digit of N?

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GMAT Data Sufficiency (DS) Questions

If N is a positive integer, what is the tens digit of N?

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