What can be the possible one digits of the square root of 9801?

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0 or 1

1 or 9

answer is C.

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Detailed Solution

Concept- A system of writing numbers is known as a number system. It is the mathematical notation for consistently employing digits or other symbols to represent the numbers in a particular set. It represents the arithmetic and algebraic structure of the numbers and gives each number a distinct representation. We can perform mathematical operations like addition, subtraction, and division using it as well.
We will find out the digit’s unit place in the square root such that it’s square should give 9801.
The unit place of the digit is given 1.
Since 12=1 and 92=81
The square root of 1 and 81 also have 1 as their unit place.
Therefore, the possible digits can be 1 or 9.
Hence, the correct answer is option 3) 1 or 9

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