If n -1 Cr : nCr : n + 1 Cr = 6 : 9 : 13 find n and - Maths - Permutations and Combinations

Question

If n -1 Cr : nCr : n + 1 Cr = 6 : 9 : 13 find n and r

Anurag · Answer

Please find this answer
<img src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_5ebbcd0ee4d1c%20png">

If n -1 Cr : nCr : n + 1 Cr = 6 : 9 : 13 find n and r.