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Division

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Formula Related to Division

  • Dividend = 46
  • Divisor = 5
  • Quotient = 9
  • Remainder = 1

 

(ভাজ্য = ভাজক x ভাগফল  + ভাগশেষ)

 

 

 

Test of Divisibility of Numbers

 

Divisible by 2 : If the last digit of the number is even (যদি সংখ্যাটোৰ শেষৰ অংকটো যুগ্ম হয়)

Example : 242, 306, 488, 500.  


 

Divisible by 3 : If the sum of the digit of a number is  divisible by 3 (যদি কোনো সংখ্যাৰ অংকৰ যোগফল ৩ ৰে হৰণযোগ্য হয়)

Example : 243 is divisible by 3, as 2 + 4 + 3 = 9, 9 is divisible  by 3.  


 

Divisible by 4 : If the last two digits of the number is  divisible by 4 (যদি সংখ্যাটোৰ শেষৰ দুটা অংক ৪ ৰে হৰণযোগ্য হয়)

Example : 1424 is divisible by 4, as 24 is divisible by 4.  


 

Divisible by 5 : If the last digit of a number is either 5 or 0 (যদি কোনো সংখ্যাৰ শেষ অংকটো হয় ৫ বা ০ হয়)

Example : 375, 3460 etc.  


 

Divisible by 6 : If the number is divisible by both 2 and 3 (যদি সংখ্যাটো ২ আৰু ৩ দুয়োটাৰে হৰণযোগ্য হয়)

Example : 786 isdivisibleby 6, as it isdivisibleby both 2 and 3.  


 

Divisible by 8 : If the last three digits of the number is  divisible by 8 (যদি সংখ্যাটোৰ শেষৰ তিনিটা অংক ৮ ৰে হৰণযোগ্য হয়)

Example : 48320 is divisible by 8 as 320 is divisible by 8.  


 

Divisible by 9 : If the sum of the digits is divisible by 9 (যদি অংকবোৰৰ যোগফল ৯ ৰে হৰণযোগ্য হয়)

Example : 4554 is divisible by 9, as 4 + 5 + 5 + 4 = 18,  18 is  divisible by 9.  


 

Divisible by 10 : If the unit digit of the number is 0 (যদি সংখ্যাটোৰ একক অংকটো ০ হয়)

Example : 540, 1860, 2370, etc.  


 

Divisible by 11 : If the sum of digits at odd and even place  are equal or differ by a number divisible by 11 (যদি অযুগ্ম আৰু যুগ্ম স্থানত থকা সংখ্যাৰ যোগফল ১১ ৰে হৰণযোগ্য সংখ্যাৰে সমান বা পৃথক হয়) 

Example : 2865423  Here, sum of digits at odd places =  2 + 6 + 4 + 3 = 15  and

2865423 = sum of digits at even places = 8 + 5 + 2 = 15  

Since, sum of digits at odd and even places are equal,  therefore the number is divisible by 11.

Note : Digit Place count Left to Right

 


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Divisible by 12 : If the number is divisible by both 3 and 4 (যদি সংখ্যাটো ৩ আৰু ৪ দুয়োটাৰে হৰণযোগ্য হয়)

Example : 48132 is divisible by 12, as it satisfies the condition  of divisibility by 4 and 3.

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