# TCS Placement Questions & Answers :: TCS

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41 / 649

find the number that can be put in place of the question mark

5,6,?,87,412,2185.

A13

B14

C18

D20

**Answer:**** Option D **

**Explanation:**

series in the form of 5*1+1^3=6,6*2+2^3=20,20*3+3^3=87,87*4+4^3=412,412*5+5^3=125.

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42 / 649

**Choose the correct option.**

Find the no of zeros in the product of 1^1*2^2*3^3*.....*49^49?

A250

B340

C130

D230

**Answer:**** Option A **

**Explanation:**

2*5=10

5^5 5 times 5

10^10 10 times 5

15^15 15

......

25^25 50

.....

5+10+15+20+2*25+30+35+40+45=250

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43 / 649

A boy buys 18 sharpeners (brown or white) for Rs. 100. For every white sharpener, he pays one rupee more than the brown sharpener. What is the cost of white sharpener & how much did he buy?

A5, 13

B5, 10

C6, 10

DNone of these

**Answer:**** Option C **

**Explanation:**

Assume that he bought b, brown sharpeners and w, white sharpeners and the cost of brown sharpener is x and white sharpener is x + 1

So w(x+1) + bx = 100

w + b = 18

b = 18 - w

Substituting in equation 1, we get w(x+1) + (18 -w)x = 100 so w + 18 x = 100

Take option 1: If white sharpners are 13, x = (100 - 13) /18 = 4.833

Option 2, If white sharpeners are 10, x = (100 - 10)/18 = 5 So white sharpeners cost is 6.

Option 3 Satisfies this condition.

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44 / 649

Fathers age is 5 times his son's age. 4 years back the father was 9 times older than son. Find the fathers present age.

A40 years.

B20 years.

C45 years.

D50 years.

**Answer:**** Option A **

**Explanation:**

lets assume son age=x

fathers age=5x

4 years back, so (x-4)=(5x-4)

then father was 9 times older than son so, 9(x-4)=(5x-4).....(1)

solving eqn (1), x=8

and fathers age =8*5=40 years

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45 / 649

It was Sunday on Jan 1, 2006. What was the day of the week Jan 1, 2010

ASunday

BSaturday

CFriday

DWednesday

**Answer:**** Option C **

**Explanation:**

Here is no explanation for this answer

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46 / 649

Three men rent a farm for Rs. 7000 per annum. A puts 110 cows in the farm for 3 months, B puts 110 cows for 6 months and C puts 440 cows for 3 months. What percentage of the total expenditure should A pay?

A20%

B14.28%

C16.66%

D11.01%

**Answer:**** Option B **

**Explanation:**

A:B:C=110*3:110*6:440*3 = 3:6:12 = 1:2:4

share of A = 1/(1+2+4) * 7000 = 1000

% expenditure of A = 1000/7000 *100 = 100/7 = 14.28%

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47 / 649

**Choose the correct option.**

The cost price of two types of tea are Rs. 180 per kg and Rs. 200 per kg respectively. On mixing them in the ratio 5:3, the mixture is sold at Rs. 210 per kg . In the whole transaction, the gain percent is

A10%

B11%

C12%

D13%

**Answer:**** Option C **

**Explanation:**

Mixing ratio=5:3

1st type tea=5/8

2nd type of tea=3/8

therefore 1 kg of mixed tea price/kg=>180*(5/8)+200*(3/8)=187.5.

total profit=210-187.5=22.5

therefore % of profit=(22.5/187.5)*100=12%

**ShortCut By ::**

**ajay**

ratio is 5:3

5x+3x=210

8x=210 => x=1680

1st type tea = 180*5 =900

2nd type tea = 200*3=600

total is =1500

profit=1680-1500 = 180

gain= (180/1500)*100= 12%

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48 / 649

A circular tent is cylindrical to a height of 3 meters and conical above it. If its diameter is 105 m and the slant height of conical portion is 53m, calculate the length of the canvas 5 m wide to make the required tent?

A973.5

B3894

C1800

D1947

**Answer:**** Option D **

**Explanation:**

Surface area of Tent= surface area of the cylinder + surface area of the cone

=(2*pi*r*h)+ (pi*r*l)

=2*(22/7)*(105/2)*3+(22/7)*(105/2)*53

=9735 sq.m

l*b=9735

b=5m,

l=9735/5 => l=1947m

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49 / 649

A man is standing in front of a painting of a man, and he tells us the following: Brothers and sisters have I none, but this man's father is my father's son. Who is on the painting?

AHis father

BHis grandfather

CHis son

DHimself

**Answer:**** Option C **

**Explanation:**

Here is no explanation for this answer

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50 / 649

**Choose the correct option.**

A trader sells total 315 tv sets.he sells black and white tv sets at a loss of 6% and color tv sets at a profit of 15% thus he gains 9% on the whole.what are the no. of blak and white sets which he has sold?

A80

B90

C120

D77

**Answer:**** Option B **

**Explanation:**

Lets assume BW=x , colour=315-x (consider 1 rs PC per tv)

x{(100-6)/100}+(315-x){(100+15)/100} = 315+315*(9/100)

=> x=90

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