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in a class, 20 opted for physics,17for maths,5for both and
10 for other subjects.the class contains how many students ?
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Answer / dev
here note that 5 students opted both Math and Phy
Therefore,
Students opted for Phy only :(20-5)= 15
Students opted for Math only :(17-5)= 12
Students opted both : 5
students of other : 10
So, total students = 42
| Is This Answer Correct ? | 53 Yes | 9 No |
Answer / prem chand
physics = 20
maths = 17
phy & mat = 5
others = 10
Total = (20-5)+(17-5)+ 10 +5
= 42
| Is This Answer Correct ? | 19 Yes | 2 No |
Answer / smriti mohanty
only physics=15
only maths=12
both p & m=5
others=10
so total=42
| Is This Answer Correct ? | 14 Yes | 1 No |
Answer / karthika
physics=20
maths=17
both=5
so, now phy+mat-both=20+17-5=32
other=10.
so...32+10=42
| Is This Answer Correct ? | 11 Yes | 1 No |
Answer / waran
p-physics=20
m-maths=17
A-both(phy&maths)=5
o-other=10
p+m+a+o=20+17+5+10=52
total students will be 52
| Is This Answer Correct ? | 1 Yes | 11 No |
Answer / sagar sutar
Answer is 37
Since 5 have opted for both (Phys & maths) the actual count will be
Only Physics: 15
Only Maths:12
Only Physics + Maths: 5
Other subjects: 5
Total Student = 15+12+5+5 = 37
| Is This Answer Correct ? | 4 Yes | 19 No |
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