Question

There is one number which is formed by writing digit 6 times (e.g.,111111, 444444 etc.) such number is always divisible by
a)7. b)11. c)13. d) all​

Answer 1

11

Explanation:

Since,

when you add digits of a number after leaving one digits and add the leftover numbers u are left with two sum.

when u subtract the sum and the answer is 0 or multiple of 11 then the number is divisible by 11.

Example:

9515

Sum 1 = 9+1 = 10

sum 2 = 5+5 = 10

10-10 = 0

Therefore 9591 is divisible by 11

Answer 2

option c is correct answer the number which is formed by writing 6 times is always divisible by 11