Find the squares of the following numbers containing 5 in unit’s place

Find the squares of the following numbers containing 5 in unit’s place:
(i) 45
(ii) 305
(iii) 525

Solution:

Observe the following pattern and find the missing digits:
21² = 441
201² = 40401
2001² = 4004001
20001² = 4 – – – 4 – – – 1
200001² = ————–

Solution:

More Solutions:

• Write five numbers which you can decide by looking
• The following numbers are obviously not perfect
• Natural numbers lie between the square of the following
• Express the following as the sum of two consecutive integers
• Find the squares of the following numbers without actual multiplication
• Write a Pythagorean triplet whose one number is
• Observe the following pattern and find the missing digits