# 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

**☛ Related Questions:**

- Without doing any calculation, find the numbers which are surely not perfect squares. (i) 153 (ii) 257 (iii) 408 (iv) 441
- Find the square roots of 100 and 169 by the method of repeated subtraction.
- Find the square roots of the following numbers by the Prime Factorisation Method. (i) 729 (ii) 400 (iii) 1764 (iv) 4096 (v) 7744 (vi) 9604 (vii) 5929 (viii) 9216 (ix) 529 (x) 8100
- For each of the following numbers, find the smallest whole number by which it should be multiplied so as to get a perfect square number. Also find the square root of the square number so obtained. (i) 252 (ii) 180 (iii) 1008 (iv) 2028 (v) 1458 (vi) 768

visual curriculum