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:
130 comments Page 3 of 13.
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)
Jagadeesh said:
3 years ago
I too agree, it is 70000.
(2)
Shruthi reddy said:
6 months ago
It is 112 * 5^4 = 70000.
(2)
Ananya said:
2 decades ago
112 x 5^4 = (2^4 * 7) * 5^4
= 2^4 * 5^4 * 7
= (2*5)^4 * 7
= 10^4 * 7
= 70000
= 2^4 * 5^4 * 7
= (2*5)^4 * 7
= 10^4 * 7
= 70000
(1)
RAVI KANT said:
1 decade ago
Multiplication of a number by 5^n: Put n zeros to the right of the multiplicand and divide the number so formed by 2^n.
So (112 x 5^4) = 1120000/2^4 = 1120000/16 = 70000.
Note: It is only apply for 5^n.
Thank you.
So (112 x 5^4) = 1120000/2^4 = 1120000/16 = 70000.
Note: It is only apply for 5^n.
Thank you.
(1)
Ramu Nakka said:
9 years ago
In simple Method we can solve this problem Like:
5 to the power of 4 means 5*5*5*5 = 625.
You can (112*5^4),
= 112*(5*5*5*5),
= 112*(625),
= 70000.
5 to the power of 4 means 5*5*5*5 = 625.
You can (112*5^4),
= 112*(5*5*5*5),
= 112*(625),
= 70000.
(1)
Trishita said:
8 years ago
112*5^4.
= 16*7*5*5*5*5,
= (4*5)*(4*5)*5*5*7,
= (20*5)*(20*5)*7,
= 100*100*7,
= 70000.
= 16*7*5*5*5*5,
= (4*5)*(4*5)*5*5*7,
= (20*5)*(20*5)*7,
= 100*100*7,
= 70000.
(1)
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)
Js parihar said:
7 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)
Prashanth said:
6 years ago
= 112 *(5 power 4).
= 5 power 4 means (5*5*5*5)=625.
= 112 * 625.
= 70,000 simple.
= 5 power 4 means (5*5*5*5)=625.
= 112 * 625.
= 70,000 simple.
(1)
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