Question

Determine the digit at it unit's place in the square of the following numbers.

a) 46.




Please pura method ma batna.​

Answer 1

Answer:

6

Explanation:

If we need to find the unit digit in square of a number. Then we could just find the unit digit of the square of the number at the unit place of that number.

46

Unit digit in 46 = 6

Square of 6 = 6² = 36

Unit digit in the square of 36 = 6

So, the unit digit in the square of 46 = 6

More:

The unit digit in the square of any number could be 1, 4, 9, 6, 5. If the number doesn't end with 1, 4, 9, 6 or 5, then the number is definitely not a perfect square.

The reason of this could be easily understood by this table :

• 1² - 1
• 2² - 4
• 3² - 9
• 4² - 16
• 5² - 25
• 6² - 36
• 7² - 49
• 8² - 64
• 9² - 81

Answer 2

Answer:

The answer is 6

Solution:-

The digit that is at its units place in the square of the following numbers is

46

The square of this 6 is:-

6 × 6 = 6² = 36

So the final answer is 36