MCQ
If P × Q has 10 elements then which is not possible?
- An(P) = 1 and n(Q ) = 10
- Bn(P) = 10 and n(Q) = 1
- Cn(P) = 2 and n(Q) = 5
- Dn(P) = 5 and n(Q) = 4
Solution:
If set P has m elements and set Q has n elements then P × Q has m × n elements.
m × n = 10 ⇒ if m = 1 then n = 10,
if m = 2 then n = 5,
if m = 5 then n = 2 and if m = 10 then n = 1.
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