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2839155 is divisible by

Option: 1

2


Option: 2

7


Option: 3

55


Option: 4

None of the above


Answers (1)

best_answer

 

 

Test of Divisibility -

Divisible by 5: if and only if the last digit is either 0 or 5

For example: 24745 is divisible by 5, as last disgit is 5.

Divisible by 11: if and only if the difference between the sum of digits in the odd places (starting from right) and Sum of the digits in the even places (starting from right) is a multiple of 11.

For Example: 27951 is divisible by 11

The sum of digits in the odd places is 2+9+1=12

The sum of digits in the even places is 7+5=12

The difference between the sum of digits in the odd places (starting from right) and Sum of the digits in the even places (starting from right) is 12-12=0

0 is divisible by 11.

-

2839155 is divisible by 5

And

Sum of the digits in the even places = 5 + 9 + 8 = 22


Sum of the digits in the odd places = 5 + 1 + 3 + 2 =11

Difference between the two sums = 22 – 11= 11

11 is divisible by 11.

Hence, 2839155 is divisible by 11.

Option C is correct

Posted by

Kuldeep Maurya

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