Question

2. Write down the unit digits of the following:

(i) 78^2 (ii) 27^2 (iii) 41^2 (iv)35^2 (v) 42^2

Answer 1

solution:

Unit digits are

1) 4

2) 9

3) 1

4) 5

5) 4

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Answer 2

Answer :

Unit Digit : The last digit of the number or we can say that the digit which appear on the one's place is called Unit Digit.

(i) 78 ² = 6084 = 4 is the Unit Digit

(ii) 27 ² = 729 = 9 is the Unit Digit

(iii) 41 ² = 1681 = 1 is the Unit Digit

(iv) 35 ² = 1225 = 5 is the Unit Digit

(v) 42 ² = 1764 = 4 is the Unit Digit