Allied & ICAR Exam Bank • ALLIED_2302 NAT • 2 Marks

Section 8: General Aptitude

Analytical & Spatial Aptitude

Subtopic: Spatial Reasoning & 3D Representations

Question Statement:

For a closed orientable surface of genus g = 2 (a double torus), what is its Euler characteristic chi? (Note: chi = 2 - 2g)

Answer Key:

-2

Step-by-Step Solution & Explanation

chi = 2 - 2(2) = 2 - 4 = -2.
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