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Mathematics
The number of ways of choosing 10 objects out of 31 objects of which 10 are identical and the remaining 21 are distinct, is :
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Q. The number of ways of choosing 10 objects out of 31 objects of which 10 are identical and the remaining 21 are distinct, is :
JEE Main
JEE Main 2019
Permutations and Combinations
A
$2^{20}$
54%
B
$2^{20} - 1 $
29%
C
$2^{20} + 1 $
15%
D
$2^{21}$
2%
Solution: