Question

Among the following, have 1 in its units place is 1) 126 power 2, 2)179 power 2, 3) 284 power 2. 4)363 power 2​

Answer 1

Answer:

Option 2 and 3 - Number have one in its units are 179^2179

2

and 281^2281

2

Step-by-step explanation:

To find : Which of the following have one in its units place ?

Solution :

The number in the units places can be found by squaring the number in units digit.

So,

1) 126^2126

2

Unit digit square 6^2=366

2

=36

So, the unit place of 126^2126

2

is 6.

2) 179^2179

2

Unit digit square 9^2=819

2

=81

So, the unit place of 179^2179

2

is 1.

3) 281^2281

2

Unit digit square 1^2=11

2

=1

So, the unit place of 281^2281

2

is 1.

4) 363^2363

2

Unit digit square 3^2=93

2

=9

So, the unit place of 363^2363

2

is 9.

Therefore, number have one in its units are 179^2179

2

and 281^2281

2

Answer 2

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Answer:

Option 2 and 3 - Number have one in its units are 179^2179

2

and 281^2281

2

Step-by-step explanation:

To find : Which of the following have one in its units place ?

Solution :

The number in the units places can be found by squaring the number in units digit.

So,

1) 126^2126

2

Unit digit square 6^2=366

2

=36

So, the unit place of 126^2126

2

is 6.

2) 179^2179

2

Unit digit square 9^2=819

2

=81

So, the unit place of 179^2179

2

is 1.

3) 281^2281

2

Unit digit square 1^2=11

2

=1

So, the unit place of 281^2281

2

is 1.

4) 363^2363

2

Unit digit square 3^2=93

2

=9

So, the unit place of 363^2363

2

is 9.

Therefore, number have one in its units are 179^2179

2

and 281^2281

2