MBA
Exam
What is the number of distinct terms in the expansion of (a + b + c)20?(1) 231 (2) 253 (3) 242 (4) 210 (5) 228[CAT2008]
1) 1
2) 2
3) 3
4) 4
5) 5
Read Solution (Total 1)
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- Number of terms in the given expansion is nothing but the non-negative integral solutions of the equation:
a + b + c = 20
Total number of non-negative integral solutions
(20+3-1)C(3-1) = 22C2 = 231
The correct option is 1. - 8 years agoHelpfull: Yes(1) No(0)
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