• Placement Questions
• /
• Numerical Ability

Placement Papers with Solutions

(#M40001080) TCS QUESTION Keep an EYE

Entry ticket to an exhibition ranges from 1p to 31p. you need to provide exact change at the counter. you have 31p coin.in how many parts will you divide 31p so that you will provide the exact change required and carry as less coins as possible?

Asked In TCS Ragini (14 years ago)

Solved suchandra raavi Read Solution (9)

Is this Puzzle helpful?   (13)   (0) Submit Your Solution Algebra

(#M40001071) INFOSYS QUESTION Keep an EYE

In an IT company 35% of employees are given Development Department and 40% of employees are given Testing Department and 20% are given both.What is the probability for an employee is given Development or testing department
95%
55%
5%
none of these

Solution

Ans:-55%
(dUt)=d(n)+t(n)-dnt
=35+40-20


Like manish sir answer on facebook.

Asked In Infosys Somil Nain (14 years ago)

Solved Read Solution (3)

Is this Puzzle helpful?   (4)   (0) Submit Your Solution Probability

(#M40001064) TCS QUESTION Keep an EYE

There are 11 boys in a family. youngest child is a boy.what is the probability that all are boys?

Solution

Since it is given that there are 11 boys in a family so answer of AMRIT is absolutely correct.
If question would be There are 11 children in a family then SOMIL NAIN and SMITA DASGUPTA are correct

Like manish sir answer on facebook.

Asked In TCS Ragini (14 years ago)

Solved Read Solution (4)

Is this Puzzle helpful?   (12)   (7) Submit Your Solution Probability

(#M40001059) TCS QUESTION Keep an EYE

Find avrg speed if a man travels at speed of 24km/hr up and 36km/hr dawn at an altitude of 200m.

Asked In TCS Ragini (14 years ago)

Solved RISHI KUMAR Read Solution (4)

Is this Puzzle helpful?   (2)   (0) Submit Your Solution Time Distance and Speed

(#M40001047) TCS QUESTION TCS MATHS PUZZLE Keep an EYE

A bag contains 4 white and 3 black balls, 2 balls are drawn at a time, randomly in succession. What is the probability that both the balls drawn are white in color, if the first ball is not replaced after the first draw.

Asked In TCS Ranvir Gupta (14 years ago)

Solved Somil Nain Read Solution (4)

Is this Puzzle helpful?   (9)   (6) Submit Your Solution Probability

(#M40001024) TCS QUESTION Keep an EYE

How many numbers can be formed using all of 1,2,3,4,5(without repetition),when the digit at the units place must be greater than that in the tenth place?
(a)54(b)40(c)60(d)48(e)36

Solution

total methods without any restriction = 5*4*3*2*1 = 120
now for units place to be greater than tens place , only one method out of the set of two will be correct. ex: 12 & 21 only one will be valid so answer will be 120/2 = 60

Like manish sir answer on facebook.

Asked In TCS Rini Mondal (14 years ago)

Solved Read Solution (6)

Is this Puzzle helpful?   (26)   (11) Submit Your Solution Averages

(#M40001021) TCS QUESTION Keep an EYE

The difference between the ages of two of my three granchildren is 3.my eldest grandchild is three times older than the age of my youngest grandchild and my eldest granchild's age is two years more than the ages of my two youngest grandchildren added together.how old is my eldest grandchild?
(a)12(b)15(c)10(c)13

Asked In TCS Ragini (14 years ago)

Solved Biswajit Das Read Solution (5)

Is this Puzzle helpful?   (13)   (2) Submit Your Solution Age Problem

(#M40001015) TCS QUESTION Keep an EYE

The average age of all boys in the class is 16.66,while the average age of all girls in the same class is 18.75.Thus the average marks of all 40 students in the class is 17.5.what is the number of girls in the class?
(a)12(b)16(c)18(d)20 (e)data insufficient

Solution

question will be correct if we use marks in the place of age
ans : x*18.75 + (40-x)*16.66 = 40*17.5
on solving we get x = 16

Like manish sir answer on facebook.

Asked In TCS Ragini (14 years ago)

Solved Read Solution (6)

Is this Puzzle helpful?   (13)   (11) Submit Your Solution Averages

(#M40001014) TCS QUESTION Keep an EYE

There are 6 positive and 8 negative numbers. Four numbers are choosen at random and multiplied.the probability that the product is positive is:
(a)500/1001 (b)503/1001 (c)303/1001 (d)101/1001 (e)505/1001

Asked In TCS Ragini (14 years ago)

Solved Somil Nain Read Solution (5)

Is this Puzzle helpful?   (30)   (6) Submit Your Solution Probability

(#M40001006) TCS QUESTION Keep an EYE

If a and b are mixed in 3:5 ration and b and c are mixed in 8:5 ration if the final mixture is 35 liters, find the amount of b?

Asked In TCS santosh kumar nayak (14 years ago)

Solved Jinesh Narayanan Read Solution (4)

Is this Puzzle helpful?   (10)   (1) Submit Your Solution Age Problem