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(i) यदि `(1 + x)^(2n)` के विस्तार में (P + 1)वे पद का गुणांक, (P + 3)वे पद के गुणांक के बराबर हो, तो दिखाइए की P = n - 1. (ii) `(x + 2y)^(9)` के प्रसा

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(i) यदि `(1 + x)^(2n)` के विस्तार में (P + 1)वे पद का गुणांक, (P + 3)वे पद के गुणांक के बराबर हो, तो दिखाइए की P = n - 1.
(ii) `(x + 2y)^(9)` के प्रसार में `x^(6)y^(3)` का गुणांक ज्ञात कीजिए ।
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Correct Answer - (ii) 672
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