i)160=25×51
ii)120=23×31×51
iii)250=21×53
1) So, Multiset of 160 of prime factors = {2,2,2,2,2,5}
Multiset of 120 of prime factors = {2,2,2,3,5}
Multiset of 250 of prime factors = {2,5,5,5}
2)
i) 2 has multiplicity 5,
5 has multiplicity 1
ii) 2 has multiplicity 3,
3 has multiplicity 1,
5 has multiplicity 1
iii) 2 has multiplicity 1
5 has multiplicity 3
3) i)A={2,2,2,2,2,5},∣A∣=6
ii)A={2,2,2,3,5},∣A∣=5
iii)A={2,5,5,5},∣A∣=4
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