Question

The cardinal number of PnQ is if p = {1,2,3,5,7), Q = {1,3,6, 10, 15), universal set S= {1,2,3,
4,5,6,7,8,9,10, 11, 12, 13, 14, 15)
a.3
b.2.
c.o
d. None of these​

Answer 1

Answer:

PnQ means P intersection Q

so your answer is Optiona .3

Step-by-step explanation:

Intersection means common element in the set

here 3 is only common element in set PandQ

So your answer is 3

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Answer 2

Answer:

the correct answer is option (b) cardinal number means number of elements in set so in p intersection q set only two elements are common which are 3 and 1 so number of elements is 2 and correct answer is (b)