Aptitude - Numbers - Discussion
Discussion Forum : Numbers - General Questions (Q.No. 2)
2.
(112 x 54) = ?
Answer: Option
Explanation:
| (112 x 54) = 112 x |  |
10 |  |
4 | = | 112 x 104 | = | 1120000 | = 70000 |
| 2 | 24 | 16 |
Discussion:
132 comments Page 4 of 14.
Ravinder said:
6 years ago
(112 * 25 * 25) = 70000.
G.manoj said:
7 years ago
5^4 = 5 * 5 * 5 * 5, 5 * 5 = 25.
So, 25 * 25 = 625 we can split 112 = 100 + 10 + 2 then;
100 * 625 = 62500,
10 * 625 = 6250,
2 * 625 = 1250 and finally answer is 62500 + 6250 + 1250 = 70000.
So, 25 * 25 = 625 we can split 112 = 100 + 10 + 2 then;
100 * 625 = 62500,
10 * 625 = 6250,
2 * 625 = 1250 and finally answer is 62500 + 6250 + 1250 = 70000.
(2)
Bhargav said:
7 years ago
112 can be written as 7 * 2^4 so (2^4)*(5^4) gives you 4 zeros.
So, 70000 is the answer.
So, 70000 is the answer.
Tony said:
7 years ago
Hi @Ravi.
How we can take it as 50/2 could you please explain it? Then it will become (25) ^4.
How we can take it as 50/2 could you please explain it? Then it will become (25) ^4.
Arjun Reddy said:
7 years ago
(112*25*25) = 70000.
Manish pandey said:
7 years ago
(112 x 54) = 112 x 10 4 =112 x 104 = 1120000 = 70000.
Js parihar said:
8 years ago
By digit sum it can be more easier:
112 * 625 = 4 * 13 = 4 * 4 =>16 = 7.
digit sum of option will be;
70000 = 7.
112 * 625 = 4 * 13 = 4 * 4 =>16 = 7.
digit sum of option will be;
70000 = 7.
(1)
Mahi said:
8 years ago
The Simple trick is;
Highest power is 4 therefore answer will be the option having 4 zeros i.e. 70000.
Highest power is 4 therefore answer will be the option having 4 zeros i.e. 70000.
Vaibhav said:
8 years ago
This method is quite easy to solve;
112 * 625.
= 100*625+10*625+2 * 625,
= 62500 + 6250 + 1250,
= 70000.
112 * 625.
= 100*625+10*625+2 * 625,
= 62500 + 6250 + 1250,
= 70000.
(1)
Giridhar Reddy said:
8 years ago
112 * 5^4 =
2 * 5 = 10 (since 112 = 2*2*2*2*7).
2 * 5 = 10
2 * 5 = 10
2 * 5 = 10
7 = 7
-----------------
7 * 10^4 = 70000.
-------------------
2 * 5 = 10 (since 112 = 2*2*2*2*7).
2 * 5 = 10
2 * 5 = 10
2 * 5 = 10
7 = 7
-----------------
7 * 10^4 = 70000.
-------------------
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