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If a cube of dimension 4 by 4 by 4 is cut into 1 by 1 by 1 a

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by GMATinsight » Mon Aug 01, 2016 9:57 am
If a cube of dimension 4 by 4 by 4 is cut into 1 by 1 by 1 after painting it by red color then which of the following is/are true.

I) Ratio of number of painted surfaces of resultant cubes to total number of surfaces is 1/4
II) Number of cubes having no faces pointed is equal to number of cubes having three faces painted.
III) Number of cubes having 2 faces painted is same as number of cubes having one face painted

a) None
b) II and III
c) II only
d) I, II & III
e) I & III only


Answer: Option D
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Source: — Problem Solving |

by GMATinsight » Mon Aug 01, 2016 9:58 am
GMATinsight wrote:If a cube of dimension 4 by 4 by 4 is cut into 1 by 1 by 1 after painting it by red color then which of the following is/are true.

I) Ratio of number of painted surfaces of resultant cubes to total number of surfaces is 1/4
II) Number of cubes having no faces pointed is equal to number of cubes having three faces painted.
III) Number of cubes having 2 faces painted is same as number of cubes having one face painted

a) None
b) II and III
c) II only
d) I, II & III
e) I & III only


Answer: Option D
Everything about the painted cube problem is calculated as shown in attachment here
Attachments
Answer 4.jpg
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"GMATinsight"Bhoopendra Singh & Sushma Jha
Most Comprehensive and Affordable Video Course 2000+ CONCEPT Videos and Video Solutions
Whatsapp/Mobile: +91-9999687183 l [email protected]
Contact for One-on-One FREE ONLINE DEMO Class Call/e-mail
Most Efficient and affordable One-On-One Private tutoring fee - US$40-50 per hour
Join the discussion