Aptitude - Numbers - Discussion
Discussion Forum : Numbers - General Questions (Q.No. 15)
15.
72519 x 9999 = ?
Answer: Option
Explanation:
| 72519 x 9999 | = 72519 x (10000 - 1) |
| = 72519 x 10000 - 72519 x 1 | |
| = 725190000 - 72519 | |
| = 725117481. |
Discussion:
15 comments Page 1 of 2.
Priya P. said:
1 decade ago
Great!
Nandish said:
1 decade ago
What if 72519*9998 = ... is it 725044962...
Thimoty said:
1 decade ago
This is a simplest shortcut method for ever.
Poornima hassan said:
1 decade ago
725190000
- 72519
............
725117481
this is the easiest method dear
- 72519
............
725117481
this is the easiest method dear
Akshay said:
10 years ago
So easy method.
Sree said:
9 years ago
It is very simple method 72519 * 9999.
72519 * 9000 = 652671000,
72519 * 900 = 65267100,
72519 * 90 = 6526710,
72519 * 9 = 652671.
Then 652671000 + 65267100 + 6526710 + 652671 = 725117481.
72519 * 9000 = 652671000,
72519 * 900 = 65267100,
72519 * 90 = 6526710,
72519 * 9 = 652671.
Then 652671000 + 65267100 + 6526710 + 652671 = 725117481.
(1)
Krishnamurthy said:
9 years ago
The easiest method can be:
72519 x 9999.
If the multiplier is series of 9 (i. e. 9, 99, 999. ) then,
Add every digit in the given answer (i.e. 7 + 2 + 5 + 1 + 1 + 7 + 4 + 8 + 1 = 36, add the answer again, i.e. 3 + 6 = 9).
And if the final answer is 9 then that number itself answers.
72519 x 9999.
If the multiplier is series of 9 (i. e. 9, 99, 999. ) then,
Add every digit in the given answer (i.e. 7 + 2 + 5 + 1 + 1 + 7 + 4 + 8 + 1 = 36, add the answer again, i.e. 3 + 6 = 9).
And if the final answer is 9 then that number itself answers.
Roshan said:
9 years ago
I think it's 72446481.
Is it correct?
Is it correct?
(3)
Vamsi aripaka said:
7 years ago
Thank for explaining the solution.
(1)
Smit said:
7 years ago
If we multiply all then option C is correct.
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