If a, b and c are the greatest values of 19Cp , 20Cq and 21Cr respectively, then:

Question:

If $a, b$ and $c$ are the greatest values of ${ }^{19} C_{p},{ }^{20} C_{q}$ and ${ }^{21} C_{r}$ respectively, then:

  1. $\frac{a}{11}=\frac{b}{22}=\frac{c}{21}$

  2. (b) $\frac{a}{10}=\frac{b}{11}=\frac{c}{21}$

  3. $\frac{a}{11}=\frac{b}{22}=\frac{c}{42}$

  4. $\frac{a}{10}=\frac{b}{11}=\frac{c}{42}$

Correct Option: 3

JEE Main Previous Year 1 Question of JEE Main from Mathematics Permutations And Combinations chapter.
JEE Main Previous Year Jan. 8, 2020 (I)

Solution:

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