Question

Which of the following is unary operation?
A). Addition
B). Multiplication
C). Square root
D). None of these

Answer 1

Hint: To find the correct option in the given problem you should know the concept of unary operation also find the minimum numbers of operands required by the operations to operate given in options such as for addition operation you require two operands i.e. A + B where A and B are the operands that use this instruction to approach the solution to the question.

Complete step-by-step solution -
Let’s find out the operands used in addition
We know that in addition, we can’t apply this operation if we have only 1 operand. We need a minimum of 2 operands to operate on. For example, if we have a number 2 we can’t use the additional operation until we get one more number.
Since unary operation operates with only 1 operand, therefore, addiction is not a unary operation
For multiplication operation we know that we need minimum 2 operands to operate the operation for example if we just have a number 6 we can’t use the multiplication operation in this case to use the operations we will need one more number
Since multiplication requires 2 operands to operate therefore multiplication is not a unary operation
For square root operation, we need minimum 1 operand to operate on, for example, let’s take a number 4 we have to use the square root operation so we can apply this operation even we only have 4 thus the square root of 4 will be \[\sqrt 4 = \sqrt {2 \times 2} \] = 2
Since square root operation requires only one operand or number to operate the operation, therefore, the square root is a unary operation
Hence, option C is the correct option.

Note: The above question was totally based on the concept of unary operation but do you know what operation is? So let’s find out; the concept of operation in mathematics says that it is a function that receives 1 or more or no input values to bring out the specified output. The input values in an operation are also called operands.