Mathematics
Let π΄ = {1,3,4,6,9} and π΅ = {2,4,5,8,10}. Let π
be a relation defined on π΄ Γ π΅ such that π
= {((π1, π1), (π2, π2))βΆ π1 β€ π2 and π1 β€ π2}. Then the number of elements in the set π
is
A
52
B
180
C
26
D
160
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