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Q:

If a = √2 + 1, b = √2 - 1 then the value of 1a+1+1b+1 ?

A) 0 B) 1
C) 2 D) 3
 
Answer & Explanation Answer: B) 1

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

If 1aa2+1 = 3, then the value of a6+1a3 is

A) 9 B) 18
C) 27 D) 1
 
Answer & Explanation Answer: B) 18

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Filed Under: Simplification
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Q:

The average marks obtained in a class of 50 students is 70%. The average of first 25 is 60% and that of 24 is 80%. What is the marks obtained by the last student?

A) 90% B) 60%
C) 80% D) 70%
 
Answer & Explanation Answer: C) 80%

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Filed Under: Percentage
Exam Prep: Bank Exams

Q:

A and B can do a piece of work in 72 days. B and C can do it in 120 days and A and C can do it in 90 days. A alone can do it in:

A) 120 days B) 130 days
C) 150 days D) 100 days
 
Answer & Explanation Answer: A) 120 days

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Filed Under: Time and Work
Exam Prep: Bank Exams

Q:

The area of a triangle with vertices A (0, 8) , O (0,0) and B (5, 0) is:

A) 8 sq. units B) 13 sq. units
C) 20 sq. units D) 40 sq. units
 
Answer & Explanation Answer: C) 20 sq. units

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Filed Under: Area
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Q:

The point of intersection of all the three medians of a triangle is called its

A) orthocentre B) incentre
C) centroid D) circumcentre
 
Answer & Explanation Answer: C) centroid

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Filed Under: Area
Exam Prep: Bank Exams

Q:

If (x+1/x) = 5, then the value of 5xx2+5x+1?

A) 1/3 B) 1/4
C) 1/2 D) 1/5
 
Answer & Explanation Answer: C) 1/2

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Filed Under: Simplification
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Q:

To cover a certain distance with a speed of 60 km/hr, a train takes 15 hours. If it covers the same distance in 12 hours, what will be its speed?

A) 65 km/h B) 70 km/h
C) 75 km/h D) 80 km/h
 
Answer & Explanation Answer: C) 75 km/h

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