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Question:

Name the property under multiplication used in each of the following: (i) a × 1 = 1 × a = a (ii) a × b = b × a (iii) a × 29b = 1

Solution:

i) Commutative property
As it follows:
A × B = B × A
ii) Commutative property
As it follows:
A × B = B × A
iii) Multiplicative inverse
As it follows:
A × (1/A) = 1