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Q:

In a class, average height of all students is 'a' cms. Among them, average height of 10 students is 'b' cms and the average height of the remaining students is 'c' cms. Find the number of students in the class. (Here a>c and b>c )

A) (a(b-c))/(a-c) B) ((b-c)/(a-c))
C) ((b-c)/10(a-c)) D) (10(b-c))/(a_c))

Answer:   D) (10(b-c))/(a_c))



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Q:

Three of the following four word-pairs are alike in a certain way and one is different. Pick the odd one out.

 

A) Chisel : Sculptor B) Anvil : Blacksmith
C) Paper : Book D) Scalpel : Surgeon
 
Answer & Explanation Answer: C) Paper : Book

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0 50
Q:

A certain sum is divided among A, B, C and D such that the ratio of the shares is A : B : C : D = 4 : 12 : 30 : 45. If the difference between the shares of A and D is ₹5,535, then the total sum (in ₹) is:

 

 

A) 12785 B) 13550
C) 12285 D) 11000
 
Answer & Explanation Answer: C) 12285

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0 43
Q:

Select the option in which the numbers are related in the same way as are the numbers of the following set.

 

173 : 125 : 85

 

A) 365 : 293 : 229 B) 285 : 221 : 135
C) 259 : 199 : 147 D) 293 : 228 : 171
 
Answer & Explanation Answer: A) 365 : 293 : 229

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0 168
Q:

If sqrt x + frac{1}{sqrt x} = 2sqrt2, then x^2 + frac{1}{x^2} is equal to:

 

A) 36 B) 34
C) 32 D) 64
 
Answer & Explanation Answer: B) 34

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2 249
Q:

If a + b + c = 8 and ab + bc + ca = 20, then a^3 + b^3 + c^3 - 3abc is equal to:

 

A) 30 B) 24
C) 32 D) 36
 
Answer & Explanation Answer: C) 32

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1 1695
Q:

The usual average speed of a car on a particular stretch of road is 75 km/hr. On a particular day, the average speed was 12% less than the usual, as a result of which the time taken was I S minutes more.


How long is the stretch of road, in kilometres?

 

A) 155 B) 176
C) 165 D) 150
 
Answer & Explanation Answer: C) 165

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1 353
Q:

In an examination in which the full marks were 500, A scored 25% more marks than B, B scored 60% more marks than C and C scored 20% less marks than D. IfA scored 80% marks, then the percentage of marks obtained by is:

 

A) 65% B) 60%
C) 50% D) 54%
 
Answer & Explanation Answer: C) 50%

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