How to check if a number is perfect Square or not

An easy and effective way to check for perfect square. After learning this method you will be easily able to find a perfect square.

[r.vgaming]

let me clear a bit of confusion almost everyone will have regarding this method to find which number is a perfect sq. or not. This method only gives u the possibility of that number being a perfect square. For example, the number 160 has 0 as the unit place and the sum of all numbers is 7, so it should be a perfect square but it is not. Use this method in MCQ. If u have 145, 237, 4463 and 160 as option in a question which of these is a perfect square, u can just take out 237 and 4463 as a possibility of being the right ans as they dont have 0, 1, 4, 5, 6, 9 as a unit digit so u just need to find out the square of just 145 and 160 using the actual method. Dont rely on this method to find the perfect sq. Its just to help u out

[AbhiyanshGuptaDK]

Guys he forgot to mention this- If the last digit is 0 then the digit before that should also be zero. :D

[fisija]

Better than most of what i learn in school, thank you and keep it up👍

[chriskaprys]

I'm trying to test myself on random numbers and the first one I tried was 54189.
-Last digit is 9 ✓
-2nd-last digit is even ✓
-Doesn't end in 5 or 6 ✓
-Digital sum is odd (9) ✓

...and yet when I tried and failed to work out the square root, then punched it in on the calculator, it says the square root is ~232.785308815

What did I miss?

edit: After more research it looks like there are algorithms, like the one in this video, for determining if a number is NOT a perfect square.

After trying the list of candidate ending numbers as a number itself (14, 569), which also satisfies the given criteria, and discovering that's not a perfect prime either, I started to have my doubts.

[AbhiyanshGuptaDK]

Thank you SO much you deserve MANY MORE Subs ❤

[thecreatorofallrabzang]

* me asking teacher a math question*
School teacher: What did you say you lil b!tch!

Random Indian teacher on YouTube: Come here my son.

[shobaranimanthri]

1249 is a surd but it satifies the rules . First last digit is 9 and 2nd last digit 4

[kiranpandey]

Now I can do my exercise very easily sir and the way that you explain is same with my book 📚 I am waiting for your next video sirsss

[LgGh-oozs]

Thank you for this
Please continue with this kind of videos, people need this 😊

[husnazeba]

Nice Video And Nice Explanation ☺☺👍👍👌😇😇😇

[vedantpandey]

thank you bhaiya i understood it very well

[raninaaz]

Very nice explanation sir now I pass my test easily thanku So much sir may god bless you ....

[santoshskohli]

I went searching for other types of problems solutions, unexpectedly got this video and it's too very helpfull

[AbhiyanshGuptaDK]

Guys if the number passes only one test you can not just say that its wrong everyone is atign very weird. You HAVE to check the sum of digits, it is compulsory. Its like saying if you pass 1 test then its right. Take chemistry(basic) for example. You wont know what the gas is if a burning flame just extinguishes you will just know its not oxygen. Request everyone to use theor brains before rushing into the comments.

[sharanabasava]

Full interesting make this types of videos

[sanskartripathi]

Wonderful explanation ❤my school teacher not explain this so well as you explain this in few minutes ❤ i am very grateful to you ❣️🙏

[legend_raza]

Well explained very easy to understand 👍🏻👍🏻

[subhashreesahoo]

Tq so much sir for this wonderful explanation 😊

[legendnemisis]

Sir, the number 4629 is not a perfect square but it is applicable for all the rules that you said.
1.In 4629 the unit digit is 9.
2. In 4629 as the unit digit is odd, the second last digit is even.
3. In 4629 the digital sum is an odd number (i.e, 3).

All rules are applied sir but why it is not a perfect square

[vishalyt]

Sir I have. No words to explain ❤️😀 you are a best teacher sir you solve all my problems