Question

2. What will be the unit digit of the squares of the following numbers?
(1) 951
(ii) 502
(iii) 329
(iv) 643
(vi) 7625
(vii) 68327 (viii) 95628
(ix) 99880
(0) 5128
(21) 124​

Answer 1

Step-by-step explanation:

By squaring the unit digits we can get the unit digits of square of the given numbers.

1) 1^2 = 1

2) 2^2 = 4

3) 9^2 = 81 = 1

4) 3^2 = 9

6) 5^2 = 25 = 5

7) 7^2 = 49 = 9

8) 8^2 = 64 = 4

9) 0^2 = 0

10) 8^2 = 64 = 4

11) 4^ 2 = 16 = 6

Answer 2

Answer:

◆I. 951= (Since the unit digit of the number is one it's square will also end in 1) 1×1= 1

◆ii. 502=unit digit= 2×2=4

◆iii.329= unit digit= 9×9=81 unit digit will be 1

◆iv.643= unit digit= 3×3=9

◆v.7625=unit digit=5×5=25 so, unit digit= 5

◆vi.68327= unit digit= 7×7=49 so , unit digit= 9

◆vii.95628=unit digit= 8×8= 64 so, unit digit= 4

◆viii.99860 = unit digit= 0

◆ix.5128= unit digit= 4 ( 8×8=64)

◆x. 124= unit digit = 6 ( 4×4=16)

Step-by-step explanation:

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