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 3 of 13.
Priya said:
1 decade ago
112*5^4 = (100+12) *625.
Use formula (a+b) *c = (a*c) + (b*c).
(100+12) *625 = (100*625) + (12*625).
= 62500+7500.
= 70000.
Use formula (a+b) *c = (a*c) + (b*c).
(100+12) *625 = (100*625) + (12*625).
= 62500+7500.
= 70000.
Poonam said:
1 decade ago
Addition is simpler than multiplication,
(100+10+2)*(25*25)
=(100+10+2)*[25(20+5)]
=(100+10+2)*[500+125]
=(100+10+2)*625
=62500+6250+1250
=70000
(100+10+2)*(25*25)
=(100+10+2)*[25(20+5)]
=(100+10+2)*[500+125]
=(100+10+2)*625
=62500+6250+1250
=70000
S.kishore sulthana said:
1 decade ago
The most easy method is
we all know that 5^4=(5^2)*(5^2)
=25*25=625
and then we multiple this answer with 112
i.e., (112*625)=70000
we all know that 5^4=(5^2)*(5^2)
=25*25=625
and then we multiple this answer with 112
i.e., (112*625)=70000
Shiyamala said:
1 decade ago
112*5^4 =112*(5*5*5*5)
=112*(625)
=70000
or
112*5^4 = 112*(10/2)^4
= 112*(10000/16)
= 1120000/16
= 70000
=112*(625)
=70000
or
112*5^4 = 112*(10/2)^4
= 112*(10000/16)
= 1120000/16
= 70000
BENU said:
1 decade ago
112/8*8*25*25
= 14*200*25
= 14*5000
= 70000
= 14*200*25
= 14*5000
= 70000
Asha said:
1 decade ago
Easiest way is 112*5*5*5*5=70000.
I have used multiplied 5 four times because they have given 5 to the power of 4 hence you can use it in a simplest manner by multiplying 5 four times.
I have used multiplied 5 four times because they have given 5 to the power of 4 hence you can use it in a simplest manner by multiplying 5 four times.
Deepeshsingh said:
1 decade ago
I did not multiply these numbers to get the answer. The simplest method is to find the number of zeros. See here we have four 5 and we can have fours 2, which when multiplied will give maximum number of fours zeros. And there is only one option with 4 0's that is 7000. :).
Rakkesh said:
1 decade ago
(100+12) (5*5*5*5).
(100+12) (625) .
100*625 = 62500 + 12*625 = 7500.
Answer = 70000.
(100+12) (625) .
100*625 = 62500 + 12*625 = 7500.
Answer = 70000.
Ritesh Keshiya said:
1 decade ago
How this 10/2 come from? Please reply with a easy method. Thank you.
Ravi said:
1 decade ago
Hi @Ritesh, Its simple man: your Q: 10/2.
You can divide this number 10/2 you will get answer 5.
We just take that form (10/2) for our convenient. Moreover you can take also 50/2 if you take, would be 25. That's all buddy.
You can divide this number 10/2 you will get answer 5.
We just take that form (10/2) for our convenient. Moreover you can take also 50/2 if you take, would be 25. That's all buddy.
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