[JEE Main 2012] the number of ways to select one or more balls from 10 white 9
The number of ways to select one or more balls from $10$ white, $9$ green and $7$ black (identical within colour) is
(a) $880$
(b) $629$
(c) $630$
(d) $879$
1 Answer
VAVidaara Admin
✓ Vidaara Team
✓ Accepted
· 2d ago
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Correct answer: (d) $879$
$(10+1)(9+1)(7+1)-1=880-1=879$.
JEE Main 2012 · Permutations and Combinations — verified solution by the Vidaara Team.
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