Question

If the unit digit of a number is 5, its square will always end with _________

please answer the question ​

Answer 1

Step-by-step explanation:

Example: To calculate the square of 57, 25 + 7 = 32 and 72 = 49, which means 572 = 3249. If the number ends in 5, its square will end in 5; similarly for ending in 25, 625, 0625, 90625, ...

Answer 2

Answer:

${(5)}^{2}$

$25$

Square of 5 is 25

If the unit digit a number is 5 its square will always end with 5

Ans. 5

Hope it helps.