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:
125 comments Page 5 of 13.
Sona` said:
1 decade ago
Is there any tricks to solve the simple problems like this question is given above.
Dipak said:
1 decade ago
= 112 (5*5*5*5).
= 112*625 = 70000.
= 112*625 = 70000.
Aravinth Jiiva said:
1 decade ago
112*5^4.
= 28*4*5*5*5*5.
= 14*2*2*2*5*5*5*5.
= 7*2*2*2*2*5*5*5*5.
= 70000.
= 28*4*5*5*5*5.
= 14*2*2*2*5*5*5*5.
= 7*2*2*2*2*5*5*5*5.
= 70000.
Vinitha said:
1 decade ago
5*5*5*5 = 625.
112*625 = 70000.
It is the simple step.
112*625 = 70000.
It is the simple step.
Umar kce said:
1 decade ago
Our author says easiest way.
Ex: Any no which is multiply by multiples of 5 we can follow these method.
= 187*5= 1870/2 = 935.
i.e, 5^1 = 5. So one zero.
If 125 means 5^3 = 125, so 000 to be added.
How many zero to be added in numerator that much of 2 to be added in denominator?
If 625 means in 1870000/2*2*2*2.
Ex: Any no which is multiply by multiples of 5 we can follow these method.
= 187*5= 1870/2 = 935.
i.e, 5^1 = 5. So one zero.
If 125 means 5^3 = 125, so 000 to be added.
How many zero to be added in numerator that much of 2 to be added in denominator?
If 625 means in 1870000/2*2*2*2.
Aniruddha Wagh said:
1 decade ago
2x5 gives 0 at unit place.
2^2x5^2 gives two zeros at last of number i.e. at unit and tens place.
Similarly for higher power gives respective zeroes at end. Now you can easily solved it. No need for me to solve.
2^2x5^2 gives two zeros at last of number i.e. at unit and tens place.
Similarly for higher power gives respective zeroes at end. Now you can easily solved it. No need for me to solve.
Sindhu said:
1 decade ago
This is simple method.
Yekambaram said:
10 years ago
I want best method.
Siva said:
10 years ago
We can use simple method:
5^4 = 5*5*5*5 = 625.
Then this to multiply with 112.
You can easily get answer 112*625 = 70000.
5^4 = 5*5*5*5 = 625.
Then this to multiply with 112.
You can easily get answer 112*625 = 70000.
Shefali said:
10 years ago
We can simply check the number of zeros by determining the number of 5's.
Here, number of 5 = 4.
So, the answer will must have 4 zeros in last! So, here the answer will be 70000!
Here, number of 5 = 4.
So, the answer will must have 4 zeros in last! So, here the answer will be 70000!
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