# Which of the following is the multiplicative identity for an integer a

a. a

b. 1

c. 0

d. -1

**Solution:**

To find the multiplicative identity for an integer “a” let us first recall what is multiplicative identity. It states that if a number is multiplied to 1 the resultant will be the number itself. “1” is the multiplicative identity of a number. It is represented as a × 1 = a = 1 × a.

Going by the same logic the multiplicative identity for an integer ** a **from the listed option is 1 (option b).

**✦ Try This: **What will be the additive and multiplicative identity for an integer 15.

Using the rules of multiplicative identity a × 1 = a = 1 × a and additive identity p + 0 = p = 0 + p we can determine the additive and multiplicative identity for an integer 15

**☛ Also Check:** NCERT Solutions for Class 7 Maths Chapter 1

**NCERT Exemplar Class 7 Maths Chapter 1 Exercise Problem 15**

## Which of the following is the multiplicative identity for an integer a: a, 1, 0, -1

**Summary:**

According to the rule of multiplicative identity a × 1 = a = 1 × a the multiplicative identity for an integer a is 1

**☛ Related Questions:**

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