मराठी

Write the Expression Ncr +1 + Ncr − 1 + 2 × Ncr in the Simplest Form. - Mathematics

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प्रश्न

Write the expression nCr +1 + nCr − 1 + 2 × nCr in the simplest form.

उत्तर

nCr+1+nCr1+2.nCr
=(nCr+1+nCr)+(nCr+nCr1)[nCr+nCr1=n+1Cr]

=n+1Cr+1+n+1Cr[nCr+nCr1=n+1Cr]
=n+2Cr+1

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Factorial N (N!) Permutations and Combinations
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पाठ 17: Combinations - Exercise 17.4 [पृष्ठ २४]

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आरडी शर्मा Mathematics [English] Class 11
पाठ 17 Combinations
Exercise 17.4 | Q 4 | पृष्ठ २४

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