Question

2 Which number sentence shows the product of a number and its reciprocal? A — ×0=0 c ² × 1 = ² B / × ² / 2 = 1 D 2 × 3 = 4/20 49​

Answer 1

c. 2/7 × 7/2 = 1

Explanation:

The product of a number and its reciprocal equals 1.

For example, 2 and 1/2 are reciprocals. 2 × 1/2 = 1

Also, 3/4 and 4/3 are reciprocals. 3/4 × 4/3 = 1

Of the choices, we see one whose product of reciprocals equals 1:

c. 2/7 × 7/2 = 1