Question

write 5 numbers which you cannot decide by looking at their unit's digit weather they are square number or not..


explain how​

Answer 1

Answer:

hope this answer is helpful for you

Step-by-step explanation:

Any natural number ending in 0, 1, 4, 5, 6 or 9 can be or cannot be a square-number. Five such

numbers are:

56790, 3671, 2454, 76555, 69209

Property 2. If a number has 1 or 9 in the unit's place, then its square ends in 1.

For example:

(1)² = 1, (9)² = 81, (11)2 = 121, (19)2 = 361, (21)² = 441.