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Question: Answered & Verified by Expert
Let $A=\{a, b, c, d\}$ and $B=\{x, y, z\} .$ What is the number of element in $A \times B$?
MathematicsSets and RelationsNDANDA 2013 (Phase 2)
Options:
  • A 6
  • B 7
  • C 12
  • D 64
Solution:
2102 Upvotes Verified Answer
The correct answer is: 12
$\mathrm{n}(\mathrm{A})=4$ and $\mathrm{n}(\mathrm{B})=3$
Number of elements in $n(A \times B)=4 \times 3=12$

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