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
Given an example of a number which is divisible by both 4 and 8 but not by 32.
Use the same rule to fill the hexagons below.
Now you also make your own magic hexagons.
If 6A × B = A 8 B, then the value of A – B is ______.
20 × 3 is a multiple of 3 if the digit × is ______ or ______ or ______.
If B × B = AB, then either A = 2, B = 5 or A = ______, B = ______.
If the digit 1 is placed after a 2-digit number whose tens is t and ones digit is u, the new number is ______.
A four-digit number abcd is divisible by 4 if ab is divisible by 4.
Number 7N + 1 will leave remainder 1 when divided by 7.
If AB + 7C = 102, where B ≠ 0, C ≠ 0, then A + B + C = 14.
1y3y6 is divisible by 11. Find the value of y.
