Advertisements
Advertisements
Question
If B × B = AB, then either A = 2, B = 5 or A = ______, B = ______.
Advertisements
Solution
If B × B = AB, then either A = 2, B = 5 or A = 3, B = 6.
Explanation:
B
Given, × B
A B
Here, B × B is a two-digit number, whose unit digit is B, therefore the value of B is either 5 or 6.
If B = 5, then A = 2 and If B = 6, then A = 3.
APPEARS IN
RELATED QUESTIONS
Given an example of a number which is divisible by 2 but not by 4.
Which of the following statement is true?
If a number is divisible by 4, it must be divisible by 8.
Do you remember magic triangles? Come now, let s make some magic squares.
- Fill this square using all the numbers from 46 to 54.
Rule: The total of each line is 150.
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 you try and change these numbers into special numbers —
28
If 
then A = ______ and B = ______.
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 N ÷ 5 leaves remainder 3 and N ÷ 2 leaves remainder 0, then N ÷ 10 leaves remainder 4.
