Advertisements
Advertisements
Question
If 123123A4 is divisible by 11, find the value of A.
Advertisements
Solution
Given, 12312344 is divisible by 11, then we have (1 + 3 + 2 + 4) – (2 + 1 + 3 + 4) is a multiple of 11.
i.e. (6 + 4) – 10 = 0, 11, 22,...
⇒ A – 4 = 0, 11, 22,...
⇒ A – 4 = 0 ...[A is a digit of the given number]
⇒ A = 4
APPEARS IN
RELATED QUESTIONS
Without performing actual addition and division write the quotient when the sum of 69 and 96 is divided by
(i) 11
(ii) 15
Given an example of a number which is divisible by 4 but not by 8.
Which of the following statement is true?
If a number is divisible by 8, it must be divisible by 4.
Which of the following statement is true?
If a number is divisible by both 9 and 10, it must be divisible by 90.
Are they equal?
Now you try and change these numbers into special numbers —
28
If A3 + 8B = 150, then the value of A + B is ______.
If 
then B = ______.
If a number a is divisible by b, then it must be divisible by each factor of b.
If AB + 7C = 102, where B ≠ 0, C ≠ 0, then A + B + C = 14.
