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:
16 comments Page 2 of 2.
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.
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.
Smit said:
8 years ago
If we multiply all then option C is correct.
Abid said:
6 days ago
It is much easier if we find the sum of the digits. Only opt A's Digits' sum is divisible by 9.
So, that's the answer.
So, that's the answer.
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