Square Of Number Ending With 5
Square Of Number Ending With 5
Rule 1: The square of a number of the form a5 (where a is tens digit and 5 is units digit) is the number which ends in 25 and has the number a(a+1) before 25 .
Rule 2: The square of a number of the form 5a (where a is units digit and 5 is tens digit) is equal to
i.e.
Rule 3: The square of a three digit number 5ab (where b is units digit and a is tens digit) is given by
Here ab stands for the number formed by the last two digits.
Rule 4:The square of a number abc...5(i.e. a number having 5 at unit's place is obtained by affixing 25 to the right of the number n(n+1),where n = abc...
Illustration: Find the square of 65.
Solution: The given number is 65 Hence it is of the form a5 where a = 6
So a(a+1) = 6(6+1) =6(7) = 42
Hence
Illustration: Find the square of 85.
Solution: The given number is 85 Hence it is of the form a5 where a = 8
So a(a+1) = 8(8+1) = 72
Hence
Illustration: Find the square of 125.
Solution: The given number is 125 Hence it is of the form a5 where a = 12
So a(a+1) = 12(13) = 156
Hence
Illustration: Find the square of 527.
The square of 35 is ___________________ . | |||
| Right Option : A | |||
| View Explanation | |||
The square of 1235 is ___________________. | |||
| Right Option : B | |||
| View Explanation | |||
The square of 59 is _____________________ .
| |||
| Right Option : B | |||
| View Explanation | |||
Students / Parents Reviews [10]
Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
