What could be the possible ‘one’s’ digits of the square root of each of the following numbers?
(i) 9801   (ii) 99856   (iii) 998001   (iv) 657666025

Solution:

If the number ends with 1, then the one’s digit of the square root of that number maybe 1 or 9

If the number ends with 6, the one’s digit of the square root of that number maybe 4 or 6

If the number ends with 5, the one’s digit of the square root of that number will be 5

(i) 9801

Since the number ends with 1, the one's digit of the square root maybe 1 or 9

(ii) 99856

Since the number ends with 6, the one’s digit of the square root maybe 4 or 6

(iii) 998001

Since the number ends with 1, the one’s digit of the square root maybe 1 or 9

(iv) 657666025

Since the number ends with 5, the one’s digit of the square root will be 5

☛ Check: NCERT Solutions for Class 8 Maths Chapter 6

Video Solution:

What could be the possible one’s' digits of the square root of each of the following numbers? (i) 9801 (ii) 99856 (iii) 998001 (iv) 657666025

NCERT Solutions for Class 8 Maths Chapter 6 Exercise 6.3 Question 1

Summary:

The possible one's digit of the square root of the given numbers  (i) 9801 (ii) 99856 (iii) 998001 (iv) 657666025 could be (i) 1 or 9, (ii) 4 or 6, (iii) 1 or 9, (iv) 5

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