Question

which of the following rational number is equal to its reciprocal
1). 1
2). 2
3). 1/2
4). 0​

Answer 1

Answer:

1 and -1 are the only rational numbers which are their own reciprocal. No other rational number is equal to its own reciprocal. So the rational numbers that are equal to their reciprocals are 1 and -1. Note: There is no rational number which when multiplied with zero, gives 1.

Answer 2

Answer:

Hello friend

In Maths, reciprocal is simply defined as the inverse of a value or a number. ... Now, if we multiply a number by its reciprocal, it gives a value equal to 1. Thus, it is also called multiplicative inverse

so the receprocal of 1 = 1/1

so the 1). 1 is correct answer

thank u