Find out the square root of 2401?1. 392. 513. 494. 69

1.	Find out the square root of 2401?1. 392. 513. 494. 69
Answer» Correct Answer - Option 3 : 49 Given: The given number = 2401 Concept: Calculation skills trick Calculation: Step(1): The unit digit in this number is 1, which can be a unit digit of its square root number such as 1 or 9. Because 1 x 1 is 1 and 9 x 9 is 81. Step(2): Now let us consider the first two digits that is 24 which comes between the squares of 4 and 5 because 16 < 24 < 25 Step(3): We can assume that the ten’s digit of the square root of 2401 is the lowest among the two numbers i.e. 4 Step(4): Now, we need to find among 41 and 49 which is the square root of 2401. Step(5): Since the ten’s digit is 4 and the next number is 5, we need to multiply both the numbers like 4 x 5 = 20 and since 20 is smaller than 24. Step(6): Square root of 2401 will be the greater number among 41 and 49 i.e. 49. ∴ √2401 = 49

Answer» Correct Answer - Option 3 : 49

Given:

The given number = 2401

Concept:

Calculation skills trick

Calculation:

Step(1):

The unit digit in this number is 1, which can be a unit digit of its square root number such as 1 or 9. Because 1 x 1 is 1 and 9 x 9 is 81.

Step(2):

Now let us consider the first two digits that is 24 which comes between the squares of 4 and 5 because 16 < 24 < 25

Step(3):

We can assume that the ten’s digit of the square root of 2401 is the lowest among the two numbers i.e. 4

Step(4):

Now, we need to find among 41 and 49 which is the square root of 2401.

Step(5):

Since the ten’s digit is 4 and the next number is 5, we need to multiply both the numbers like 4 x 5 = 20 and since 20 is smaller than 24.

Step(6):

Square root of 2401 will be the greater number among 41 and 49 i.e. 49.

∴ √2401 = 49

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