A six-digit number is formed by repeating a three-digit number. For
example 256256, 678678, etc. Any number of this form is divisible
by
(a) 7 only (b) 11 only (c) 13 only (d) 1001
If abc is a three digit number, then the number abc – a – b – c is divisible by
(a) 9 (b) 90 (c) 10 (d) 11
A four-digit number 4ab5 is divisible by 55. Then the value of b – a is
(a) 0 (b) 1 (c) 4 (d) 5
Let abc be a three digit number. Then abc + bca + cab is not divisible by
(a) a + b + c (b) 3 (c) 37 (d) 9
A four-digit number aabb is divisible by 55. Then possible value(s) of b is/are
(a) 0 and 2 (b) 2 and 5 (c) 0 and 5 (d) 7
The sum of all the numbers formed by the digits x, y and z of the
number xyz is divisible by
(a) 11 (b) 33 (c) 37 (d) 74
Let abc be a three-digit number. Then abc – cba is not divisible by
(a) 9 (b) 11 (c) 18 (d) 33
Generalised form of a two-digit number xy is
(a) x + y (b) 10x + y (c) 10x – y (d) 10y + x
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