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If .^nC4, ^nC5 and .^nC6 are in A.P. th...

If `.^nC_4, ^nC_5 ` and `.^nC_6` are in A.P. then `n` is equal to (A) `11` (B) `14` (C) `12` (D) `9`

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JEE MAINS PREVIOUS YEAR ENGLISH-JEE MAINS-All Questions
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