Advertisements
Advertisements
प्रश्न
A four-digit number abcd is divisible by 11, if d + b = ______ or ______.
Advertisements
उत्तर
A four-digit number abcd is divisible by 11, if d + b = a + c or 12(a + c).
Explanation:
We know that, a number is divisible by 11, if the difference between the sum of digits at odd places and the sum of its digits at even places is either 0 or a multiple of 11.
Hence, abcd is divisible by 11, if (d + b) – (a + c) = 0, 11, 22, 33, ...
⇒ d + b = a + c or d + b = 12(a + c)
APPEARS IN
संबंधित प्रश्न
Without performing actual addition and division write the quotient when the sum of 69 and 96 is divided by
(i) 11
(ii) 15
Without performing actual computations, find the quotient when 94 − 49 is divided by
(i) 9
(ii) 5
Which of the following statement is true?
A number is divisible by 18, if it is divisible by both 3 and 6.
Which of the following statement is true?
If a number is divisible by both 9 and 10, it must be divisible by 90.
Which of the following statement is true?
If two numbers are co-prime, at least one of them must be a prime number.
Do you remember magic triangles? Come now, let s make some magic squares.
- Fill this square using all the numbers from 21 to 29.
Rule: The total of each side is 75.
Use the same rule to fill the hexagons below.
Now you also make your own magic hexagons.
Now, look at this —
Check if it is true or not.
If a 3-digit number abc is divisible by 11, then ______ is either 0 or multiple of 11.
If A × 3 = 1A, then A = ______.
