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प्रश्न
Using Euler’s formula, find V if E = 30, F = 12.
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उत्तर
E = 30, F = 12
Euler’s formula:
F + V = E + 2
∴ 12 + V = 30 + 2
∴ 12 + V = 32
∴ V = 32 – 12 = 20
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