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प्रश्न
Select the correct answer from the given alternatives.
The coefficient of the 8th term in the expansion of (1 + x)10 is:
पर्याय
7
120
10C8
210
उत्तर
120
Explanation;
r = 7,
∵ T8 = 10C7 x7 = 10C3 x7
∴ coefficient of T8 = 10C3 = 120
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