Interview Questions

Quantitative Aptitude Back

Five boys were climbing a hill. J was following H. R was just ahead of G. K was between G & H. They were climbing up in a column. Who was the second?
Ans: 

G.

The order in which they are climbing is R - G - K - H - J.

If a light flashes every 6 seconds, how many times will it flash in ¾ of an hour?
Ans: 

451 times.

There are 60 minutes in an hour.
In ¾ of an hour there are (60 * ¾) minutes = 45 minutes.
In ¾ of an hour there are (60 * 45) seconds = 2700 seconds.
Light flashed for every 6 seconds.
In 2700 seconds 2700/6 = 450 times.
The count start after the first flash, the light will flashes 451 times in ¾ of an hour.

If point P is on line segment AB, then which of the following is always true? (1) AP = PB (2) AP > PB (3) PB > AP (4) AB > AP (5) AB > AP + PB
Ans: 

4.

P
A B
Since p is a point on the line segment AB, AB > AP.

All men are vertebrates. Some mammals are vertebrates. Which of the following conclusions drawn from the above statement is correct.
1. All men are mammals
2. All mammals are men
3. Some vertebrates are mammals.
4. None
Ans: 

Some vertebrates are mammals.

Which of the following statements drawn from the given statements are correct? Given: All watches sold in that shop are of high standard. Some of the HMT watches are sold in that shop.
a) All watches of high standard were manufactured by HMT.
b) Some of the HMT watches are of high standard.
c) None of the HMT watches is of high standard.
d) Some of the HMT watches of high standard are sold in that shop.
Ans: 

(b) & (d).

If every alternative letter starting from B of the English alphabet is written in small letter, rest all are written in capital letters, how the month "September" be written. (1) SeptEMbEr (2) SEpTeMBEr (3) SeptembeR (4) SepteMber (5) None of the above.
Ans: 

5.

Since every alternative letter starting from B of the English alphabet is written
in small letter, the letters written in small letter are b, d, f...
In the first two answers the letter E is written in both small & capital letters, so
they are not the correct answers. But in third and fourth answers the letter is written in small letter instead capital letter, so they are not the answers.

The length of the side of a square is represented by x+2. The length of the side of an equilateral triangle is 2x. If the square and the equilateral triangle have equal perimeter, then the value of x is _______.
Ans: 

x = 4.

Since the side of the square is x + 2, its perimeter = 4 (x + 2) = 4x + 8
Since the side of the equilateral triangle is 2x, its perimeter = 3 * 2x = 6x
Also, the perimeters of both are equal.
(i.e.) 4x + 8 = 6x
(i.e.) 2x = 8 x = 4.

It takes Mr. Karthik y hours to complete typing a manuscript. After 2 hours, he was called away. What fractional part of the assignment was left incomplete?
Ans: 

(y - 2) / y.

To type a manuscript karthik took y hours.
Therefore his speed in typing = 1/y.
He was called away after 2 hours of typing.
Therefore the work completed = 1/y * 2.
Therefore the remaining work to be completed = 1 - 2/y.
(i.e.) work to be completed = (y-2)/y.

Which of the following is larger than 3/5? (1) ½ (2) 39/50 (3) 7/25 (4) 3/10 (5) 59/100
Ans: 

39/50.

The number that does not have a reciprocal is ____________.
Ans: 

1.

One is the only number exists without reciprocal because the reciprocal of one is one itself.