The value of 6 50 56 4 3 1 r r C C – = + å is

Question:

The value of ${ }^{50} C_{4}+\sum_{r=1}^{6}{ }^{56-r} C_{3}$ is

  1. ${ }^{55} C_{4}$

  2. ${ }^{55} C_{3}$

  3. ${ }^{56} C_{3}$

  4. ${ }^{56} C_{4}$

Correct Option: 4

JEE Main Previous Year 1 Question of JEE Main from Mathematics Permutations And Combinations chapter.
JEE Main Previous Year 2005

Solution:

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