Question

A six digit number is formed by repeating a three
digit number, e.g., 256256 or 678678. Any number
of this form is always divisible by
(1) 7
(2) 1001
(3) 11
(4) All of these​

Answer 1

it will always be divisible by 1001

explanation with example:

234234 = 234 × 1001

567567 = 567 × 1001, etc.

So, any number of this form is divisible by 1001.