Advertisements
Advertisements
प्रश्न
Find the value of the letter in the following and give reasons for the steps involved.
1 A
x A
------
9 A
------
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.
APPEARS IN
संबंधित प्रश्न
Find the values of the letters in the following and give reasons for the steps involved
A B
x 3
-------
C A B
-------
Find the values of the letters in the following and give reasons for the steps involved.
1 2 A
+ 6 A B
---------
A 0 9
---------
| A | |
| + | A |
| + | A |
| B | A |
If 
where Q – P = 3, then find the values of P and Q.
If 1AB + CCA = 697 and there is no carry-over in addition, find the value of A + B + C.
Find the value of the letters in the following question.
A B
× 6
C 6 8
Find the value of the letters in the following question.
A B
– B 7
4 5
If 2A7 ÷ A = 33, then find the value of A.
If from a two-digit number, we subtract the number formed by reversing its digits then the result so obtained is a perfect cube. How many such numbers are possible? Write all of them.
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?
