Question

p= {1,2,3,5,7} q={1,3,6,10,15}
s={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}
find n(p^1)
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Answer 1

Answered

If a= {1, 2, 3, 5, 7} and b={ 1, 3, 6, 10, 15}. cardinal number of a-b is

1