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Let A = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. Then the number of subsets of A containing two or three elements is
  • a)
    45
  • b)
    120
  • c)
    165
  • d)
    330
Correct answer is option 'C'. Can you explain this answer?
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Let A= {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. Then the number of subsets of ...
Required no. of subsects = 10C2 + 10C3 = 45 + 120 = 165
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Let A= {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. Then the number of subsets of A containing two or three elements isa)45b)120c)165d)330Correct answer is option 'C'. Can you explain this answer?
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