If sum_r=1^25 \^50C_r · ^50-rC_25-r\ = K(^50C_25), then, K is equal to

If sum_r=1^25 \^50C_r · ^50-rC_25-r\ = K(^50C_25), then, K… — JEE Main 2019 Mathematics PYQ

JEE Main 2019 · 10 Jan · Shift II

\sum_{r=1}^{25} \{{}^{50}C_r \cdot {}^{50-r}C_{25-r}\} = K({}^{50}C_{25})

,

then,

K

is equal to

Show answer

Correct option: C

[JEE Main 2019 · 10 Jan · Shift II]

Practise Permutations and Combinations the way it is asked

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