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If \( a, b \) and \( c \) are the greatest value of \( { }^{19} C_{p},{ }^{20} C_{q} \) and \( { }^{21} C_{r} \) respect…

Q1

If \( a, b \) and \( c \) are the greatest value of \( { }^{19} C_{p},{ }^{20} C_{q} \) and \( { }^{21} C_{r} \) respectively, then

[JEE Main 2020, 8 Jan (Shift 1)]

a

\( \frac{\mathrm{a}}{11}=\frac{\mathrm{b}}{22}=\frac{\mathrm{c}}{21} \)

b

\( \frac{\mathrm{a}}{10}=\frac{\mathrm{b}}{11}=\frac{\mathrm{c}}{21} \)

c

\( \frac{\mathrm{a}}{10}=\frac{\mathrm{b}}{11}=\frac{\mathrm{c}}{42} \)

d

\( \frac{\mathrm{a}}{11}=\frac{\mathrm{b}}{22}=\frac{\mathrm{c}}{42} \)

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