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प्रश्न
Find the value of the letter in the following and give reasons for the steps involved.
1 A
x A
------
9 A
------
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उत्तर
The multiplication of A with A itself gives a number whose ones digit is A again. This happens only when A = 1, 5, or 6.
If A = 1, then the multiplication will be 11 × 1 = 11. However, here the tens digit is given as 9. Therefore, A = 1 is not possible. Similarly, if A = 5, then the multiplication will be 15 × 5 = 75. Thus, A = 5 is also not possible.
If we take A = 6, then 16 × 6 = 96. Therefore, A should be 6.
The multiplication is as follows
1 6
x 6
------
9 6
------
Hence, the value of A is 6.
संबंधित प्रश्न
Find the values of the letters in each of the following and give reasons for the steps involved.
3 A
+ 2 5
-------
B 2
-------
Find the values of the letters in the following and give reasons for the steps involved.
4 A
+ 9 8
------
C B 3
------
Find the values of the letters in the following and give reasons for the steps involved.
A B
+ 3 7
------
6 A
------
Find the values of the letters in the following and give reasons for the steps involved.
A B
x 6
-------
B B B
-------
Find the values of the letters in the following and give reasons for the steps involved.
2 A B
+ A B 1
---------
B 1 8
----------
| A | |
| + | A |
| + | A |
| B | A |
Let D = 3, L = 7 and A = 8. Find the other digits in the sum
M A D
+ A S
+ A
B U L L
Work out the following multiplication.
12345679
× 9
Use the result to answer the following question.
By what number should 12345679 be multiplied to get 888888888?
Work out the following multiplication.
12345679
× 9
Use the result to answer the following question.
By what number should 12345679 be multiplied to get 999999999?
Find the value of the letters in the following:
P Q
× 6
Q Q Q
