Source: Official Guide for the GMAT 13th Ed. Data Sufficiency; #46 Official Guide for the GMAT 2015 14th Ed. Data Sufficiency; #46

2

What is the tenths digit in the

What is the tenths digit in the decimal representation of a certain number?

2 Explanations

1

Harsh Singh

here is the video explanation
https://gmat.magoosh.com/forum/1391-what-is-the-tenths-digit-in-the-decimal

Apr 7, 2018 • Comment

1

Srinivas KJ

1) - Number is less than 1/3 => number is less than 0.33
Hence the number could be 0.01,0.12,0.23,0.32 etc (tenths digit could be anything from 0 through 3) - not Sufficient;

2) Number is greater than 1/4 => Number is greater than 0.25
Hence the number could be 0.30,0.45,0.78,0.89 etc
(tenths digit could be anything from 2 through 9)

After combining we are left with the following condition => 0.25

Nov 1, 2016 • Comment

Sam Kinsman, Magoosh Tutor

That's right Srinivas - good job! :D

Nov 2, 2016 • Reply

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Official Guide for the GMAT 2015 14th Ed.

Official Guide for the GMAT 13th Ed.

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Official Guide for the GMAT 12th Ed.

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Section 6.3 Data Sufficiency

Section 6.3 Data Sufficiency

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