Aptitude - Numbers - Discussion
Discussion Forum : Numbers - General Questions (Q.No. 11)
11.
5358 x 51 = ?
Answer: Option
Explanation:
| 5358 x 51 | = 5358 x (50 + 1) |
| = 5358 x 50 + 5358 x 1 | |
| = 267900 + 5358 | |
| = 273258. |
Discussion:
17 comments Page 2 of 2.
Rajesh said:
1 decade ago
5000*50=250000 ! 5000*1=5000.
300*50= 15000 ! 300*1= 300.
50*50= 2500 ! 50*1= 50.
8*50= 400 ! 8*1= 8.
--------- -------
267900 + 5358 =273258.
300*50= 15000 ! 300*1= 300.
50*50= 2500 ! 50*1= 50.
8*50= 400 ! 8*1= 8.
--------- -------
267900 + 5358 =273258.
Vinodhini said:
9 years ago
(5358 * 100)/2 + (1 * 5358).
EXP: 51 = (50 + 1) = (100/2 + 1).
Therefore, 535800/2 = 267900.
1 * 5358 = 5358.
267900 + 5358 = 273258.
EXP: 51 = (50 + 1) = (100/2 + 1).
Therefore, 535800/2 = 267900.
1 * 5358 = 5358.
267900 + 5358 = 273258.
Malay biitm bbsr said:
1 decade ago
First step:5358*100 = 535800 .
2nd step:535800/2 = 267900.
3rd step:267900+5358 = 273258.
2nd step:535800/2 = 267900.
3rd step:267900+5358 = 273258.
Sankar j said:
1 decade ago
5358*51
Just multiply by 50 and add that number one more time.
Base for 50 is 100:
For to multiply by 50 just divide the number by 2 and add two zero at last if number is even.
Given number is even number just divide that number by 2
5358/2=2679
Add two zero at last (because base is 100) 267900
267900+5358=273258
Just multiply by 50 and add that number one more time.
Base for 50 is 100:
For to multiply by 50 just divide the number by 2 and add two zero at last if number is even.
Given number is even number just divide that number by 2
5358/2=2679
Add two zero at last (because base is 100) 267900
267900+5358=273258
Poornima hassan said:
1 decade ago
1.5358
5+3+5+8=21
2+1=3........(a)
2.5+1=6.....(b)
now
a*b
ie 3*6=18
1+8=9..........(rhs)
now come to lhs
2+7+3+2+5+8=27
2+7=9.....(lhs)
now
rhs=lhs
9=9
so ans is 273258
5+3+5+8=21
2+1=3........(a)
2.5+1=6.....(b)
now
a*b
ie 3*6=18
1+8=9..........(rhs)
now come to lhs
2+7+3+2+5+8=27
2+7=9.....(lhs)
now
rhs=lhs
9=9
so ans is 273258
Onkar said:
1 decade ago
5358 (10*5+1) =53580*5+5358=267900+5358=273258.
This is simplest method I hope you got.
This is simplest method I hope you got.
Raghu kumar said:
1 decade ago
5358*5=267900+5358=273258
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