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Shikha
- Rate $2
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- Mathematics
- Algebra
- Trigonometry
- Geometry
- Statistics
Best approaches to crack competitive exams and superfast calculation tricks (without pen n paper)
- Mathematics
- Algebra
- Trigonometry
- Geometry
- Statistics
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About Shikha
I'm a BTech graduate in electronics and communication engineering
Have cracked GATE exam twice,
And now I'm an aspirant seeking a government job.I understand the importance of best and shortest approaches that will help you crack any exams that comprises maths, reasoning,English,gk,gs.
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About the lesson
- All Levels
- English
All languages in which the lesson is available :
English
53%of 120+25%of 862=?%of 500
Options
a)92.5 b)55.82 c) 63.68 d) 38.89
use digital sum approch
(5+3 )%of (1+2+0)+(2+5)%of(8+6+2)=x%of (5+0+0)
=>8*3+7*16=x*5
=>10=5x
X=2(digital sum),Now check options for digital sum =2
a)9+2+5=7 b)5+5+8+2=2 c)6+3+6+8=23=5d)3+8+8+9=28=1
Clearly answer=option b =55.82
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