Aptitude and Reasoning Questions

Q:

The distance of the college and home of Rajeev is 80km. One day he was late by 1 hour than the normal time to leave for the college, so he increased his speed by 4km/h and thus he reached  to college  at the normal time. What is the changed (or increased) speed of Rajeev?

A) 28 km/h B) 30 km/h
C) 40 km/h D) 20 km/h
 
Answer & Explanation Answer: D) 20 km/h

Explanation:

Let the normal speed be x km/h, then 

80x-80(x+4)=1

x2+4x-320=0

x (x + 20) - 16 (x + 20) = 0

(x + 20 ) (x - 16) =0

 

x = 16 km/h

 Therefore (x + 4) = 20 km/h

 Therefore increased speed = 20 km/h

Report Error

View Answer Report Error Discuss

Filed Under: Time and Distance

55 35650
Q:

MABELA, MABLE, MABUSE, MABEPEARL, ?

If the above given words are arranged in the dictionary then the last word is

A) MABLE B) MABUSE
C) MABEPEARL D) MEBELA
 
Answer & Explanation Answer: B) MABUSE

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Logical Sequence of Words
Exam Prep: Bank Exams

5 35647
Q:

In the following question, select the related letter pair from the given alternatives.

HFZ : LJD : : ? : ?

A) KTM : OXQ B) KBN : LCO
C) BHO : DJQ D) FKU : INX
 
Answer & Explanation Answer: A) KTM : OXQ

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Analogy
Exam Prep: Bank Exams

0 35635
Q:

In the following question, select the related number from the given alternatives.

 

64 : 10 : : 94 : ?

 

A) 16 B) 7
C) 4 D) 13
 
Answer & Explanation Answer: D) 13

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Analogy
Exam Prep: Bank Exams

1 35591
Q:

The diagonal of a rectangle is sqrt(41) cm.  and its area is 20 sq. cm. The perimeter of the rectangle must be:

A) 9 cm B) 18 cm
C) 20 cm D) 41 cm
 
Answer & Explanation Answer: B) 18 cm

Explanation:

l2+b2 = diagonal2=40

Also, lb=20

 

l+b2=l2+b2+2lb = 41 + 40 =81 

(l + b) = 9.

Perimeter = 2(l + b) = 18 cm.

Report Error

View Answer Report Error Discuss

48 35580
Q:

If x is 80% of y, then what percent of 2x is y?

A) 65.5 % B) 64.5 %
C) 63.5 % D) 62.5 %
 
Answer & Explanation Answer: D) 62.5 %

Explanation:

 x = 80 % of y  

=> x =(80/100 )y  

=> y/x = 5/4  

Required percentage =  [(y/2x)*100] % = (5/8*100) % =62.5%

Report Error

View Answer Report Error Discuss

Filed Under: Percentage

96 35541
Q:

A box contains 10 bulbs,of which just three are defective. If a random sample of five bulbs is drawn, find the probability that the sample contains exactly one defective bulb.

A) 5/12 B) 7/12
C) 3/14 D) 1/12
 
Answer & Explanation Answer: A) 5/12

Explanation:

Total number of elementary events = 10C5

 

Number of ways of selecting exactly one defective bulb out of 3 and 4 non-defective out of 7 is 3C1*7C4

 

So,required probability =3C1*7C4/10C5 = 5/12.

Report Error

View Answer Report Error Discuss

Filed Under: Probability

66 35530
Q:

A train of length 110 meter is running at a speed of 60 kmph. In what time, it will pass a man who is running at 6 kmph in the direction opposite to that in which the train is going?

A) 10 B) 8
C) 6 D) 4
 
Answer & Explanation Answer: C) 6

Explanation:

Distance = 110 m

Relative speed = 60 + 6 = 66 kmph (Since both the train and the man are in moving in opposite direction)

= (66*5/18)  m/sec = 55/3  m/sec

Time taken to pass the man = (100*3/55) = 6 s

Report Error

View Answer Report Error Discuss

Filed Under: Problems on Trains

81 35519