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Class 12 Maths Practice Test - Binary Operations
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Avg score: 59% • Most missed: “Let ‘&’ be a binary operation defined on the set N. Which of the following defin…”
Class 12 Maths Practice Test - Binary Operations
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10 Questions

1. Let ‘*’ be a binary operation defined by a*b=3ab+5. Find 8*3.
2. Which of the following is not a type of binary operation?
3. Let a binary operation ‘*’ be defined on a set A. The operation will be commutative if ________
4. Let a*b=6a4-9b4 be a binary operation on R, then * is commutative.
5. Let ‘*’ be defined on the set N. Which of the following are both commutative and associative?
6. Let ‘&’ be a binary operation defined on the set N. Which of the following definitions is commutative but not associative?
7. An element is said to be invertible only if there is an identity element in that binary operation.
8. Let ‘*’ be a binary operation on N defined by a*b=a-b+ab2, then find 4*5.
9. Let ‘*’ be a binary operation defined by a*b=4ab. Find (a*b)*a.
10. Let ‘*’ and ‘^’ be two binary operations such that a*b=a2 b and a ^ b = 2a+b. Find (2*3) ^ (6*7).

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