Mathematics Practice Test – Binary Operations (Questions with Answers and Explanations)

The operation * on the set R of real numbers is defined by x * y = 3x + 2y – 1. Find (3 * -1). (JAMB 2018)

A. 9
B. -9
C. 6
D. -6

A binary operation * is defined by a * b = a^b. If a * 2 = 2 – a, find the possible value of a. (JAMB 2000)

A. 1, -2
B. 1, 2
C. 2, -2
D. 1, -1

Find the inverse of p under the binary operation defined by p * q = p + q – pq, where p and q are real numbers and zero is the identity. (JAMB 2000)

A. p      B. -1      C.      D.

A binary operation * is defined by x * y = x^y. If x * 2 = 12 – x, find the possible values of x. (JAMB 2014)

A. 3, 4
B. 3, -4
C. -3, 4
D. -3, -4

If the operation * in the set of integers is defined by p * q = , find the value of 4 * (8 * 32). (JAMB 2004)

A. 8
B. 3
C. 16
D. 4