Easy
If $^8C_r = ^8C_{r+2}$,then the value of $^rC_2$ is
- A$8$
- B$3$
- C$5$
- D$2$
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$^{n-1}C_r = (k^2 - 8) ^nC_{r+1}$ if and only if:
DifficultJEE MAIN 2024
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Medium
View SolutionFrom $5$ consonants and $5$ vowels,how many words can be formed using $3$ consonants and $2$ vowels?
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