Q 1: Check if a*b = ab is associative. Wrie your answer as y or N. Answer:

Q 2: Find the identity element for the operation a*b = a+b+1, a, b € I Answer:

Q 3: Check if a*b = a+ab is associative. Write as Y or N Answer:

Q 4: Check if a*b = ab/4 is associative. Write your answer as Y or N. Answer:

Q 5: Find if the binary operation a*b = (a+b)/2 on Q associative? Write your answer as Y or N. Answer:

Q 6: Find identity element in i = {1,0,1} if the binary operation is addition defined on I. Answer:

Q 7: Find the identity element a*b = a+b+ab, a, b € I Answer:

Q 8: Is a*b = a+b, a, b € 1 is a binary operation? Write your answer as Y or N. Answer:

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