If A = {1, 2} and B = {a, b, c, d} then the number of elements in B x A are?
- 64
- 16
- 8
- None of these
Explanation
The number of elements in B × A is found by multiplying the number of elements in B and A:
|B| × |A| = 4 × 2 = 8
Each ordered pair has one element from B and one from A.
Related MCQs
ایسی شخصیت جس کے چاروں اطراف برابر ہوں وہ کیا کہلاتی ہیں؟
- Rectangle
- Square
- Circle
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
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