Divisibility Rule of 3
Divisibility Rule of 3:
Any natural number is divisible by 3 if the sum of its digits is also divisible by 3.
Justification:
Let us first consider case of a two digit number:
be a two digit number. Then, n can be written as
n = 10a + b, where b is units digit of n.
n = 9a + a + b
n = a multiple of 9 + ( a + b )
Since a multiple of 9 is also a multiple of 3, so
n is a multiple of 9, if ( a + b ) is a multiple of 3
Thus, a two digit number is divisible by 3, if the sum of its digits is divisible by 3.
If a number is divisible by 9, then it is also divisible by ________ number. | |||
| Right Option : A | |||
| View Explanation | |||
If the numders 1x8 is divisible by 3, then x is equal to | |||
| Right Option : A | |||
| View Explanation | |||
Which of the following numbers are divisible by 3? 556501 , 425521 , 910765, 514518, 432771, 648720, 976430 | |||
| Right Option : C | |||
| View Explanation | |||
Students / Parents Reviews [10]
My experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thIt 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
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Hiya Gupta
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
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thBeing 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
Yatharthi Sharma
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Om Umang
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.
