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Question
Which of the following is the multiplicative identity for an integer a?
Options
a
1
0
–1
MCQ
Solution
1
Explanation:
Multiplicative identity for an integer a is 1. ......[ ∵ a × 1 = a = 1 × a]
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| Column I | Column II |
| (a) a × 1 | (i) Additive inverse of a |
| (b) 1 | (ii) Additive identity |
| (c) (–a) ÷ (–b) | (iii) Multiplicative identity |
| (d) a × (–1) | (iv) a ÷ (–b) |
| (e) a × 0 | (v) a ÷ b |
| (f) (–a) ÷ b | vi) a |
| (g) 0 | (vii) –a |
| (h) a ÷ (–a) | (viii) 0 |
| (i) –a | (ix) –1 |
Determine the integer whose product with (–1) is 0.
