RRB JE practice question
A cube of side 8 cm is painted on all its outer surfaces and then cut into 512 smaller cubes of side 1 cm each. How many of these smaller cubes have at least 1 face painted?
From a RRB JE Reasoning practice set · Reasoning
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Correct answer: (C) 296
At least 1 face painted = total cubes − inner cubes = 512 − 216 = 296.
हिंदी में प्रश्न
8 सेमी भुजा वाले एक घन के सभी बाहरी पृष्ठों को रंगा गया और फिर इसे 1 सेमी भुजा वाले 512 छोटे घनों में काटा गया। इनमें से कितने छोटे घनों के कम से कम 1 फलक रंगा हुआ हैं?
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सही उत्तर: (C) 296
At least 1 face painted = total cubes − inner cubes = 512 − 216 = 296.
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