# MindTree Placement Questions & Answers :: MindTree

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1 / 59

**Choose the correct option.**

A can do a piece of work in 14 days which B can do in 21 days. They begin together but 3 days before the completion of the work, A leaves off. The total number of days to complete the work is:

A6 3/5

B8 1/2

C10 1/5

D13 1/2

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

**Explanation:**

A's 1 day work = \(\frac{1}{14}\)

B' 1 day work = \(\frac{1}{21}\)

A left 3 day before the completion of work.

B's 3 days' work = \(\frac{1}{21} \times 3 = \frac{1}{7}\)

Remaining work = \(1 \times \frac{1}{7} = \frac{6}{7}\)

(A + B)'s 1 day's work = \(\left(\frac{1}{14} + \frac{1}{21}\right) = \frac{5}{42}\)

Now, \(\frac{5}{42}\) work is done by A and B = 1 day.

or

whole work done by A&B = \(\frac{42}{5}\)

\(\frac{6}{7}\) part of work done by A and B = \(\frac{42}{5} \times \frac{6}{7} = \frac{36}{5}\) days.

Hence, total time taken = (3+36/5)days = \(10\frac{1}{5}\) days.

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2 / 59

**Choose the correct option.**

A vendor bought toffees at 6 for a rupee. How many for a rupee must he sell to gain 20%?

A3

B4

C5

D6

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

**Explanation:**

C.P. of 6 toffees = Re. 1

S.P. of 6 toffees = 120% of Re. 1 = Rs. (120/100 ) = Rs. 6/5

so toffees in Re 1 = 6 * 5/6 = 5

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3 / 59

**Choose the correct option.**

In a certain company, 20% of the men and 40% of the women attended the annual company picnic. If 35% of all the employees are man, what percent of all the employees went to the picnic?

A33.33%

B34%

C30%

D33%

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

**Explanation:**

Lets assume that total 100 employees are in company.

out of that 35 are man and remaining 65 are women.

20% of man 35 = 20*35/100

40% of women = 40*65/100

total employees = 7+26 = 33 out of 100

=> 33 %

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4 / 59

**Choose the correct option.**

In seven given numbers,the average of first four numbers is 4 and that of last four numbers is also 4. If the average of these seven numbers is 3, the fourth number is?

A3

B4

C7

D11

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

**Explanation:**

let 7 numbers are a,b,c,d,e,f,g.

given avg of first 4 nums are 4...i.e (a+b+c+d)/4=4

a+b+c+d=16

given avg of last 4 nums are also 4..i.e.(d+e+f+g)/4=4

d+e+f+g=16

e+f+g=16-d

given avg of 7 nums are 3....i.e (a+b+c+d+e+f+g)/7=3

a+b+c+d+e+f+g=21

16+16-d=21

d=32-21

d=11

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5 / 59

**Choose the correct option.**

The boys and girls in a college are in the ratio 3 : 2. If 20% of the boys and 25% of the girls are adults, the percentage of students who are not adults is :

A58%

B67.50%

C78%

D82.50%

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

**Explanation:**

let total students will be 100 divide it in 3:2 =60/40

20 % 60=12 boys adult

25 % 40= 10girls adults

total adults = 22

no of students =100

100-22=78

78% are non adult

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6 / 59

**Choose the correct option.**

In June a baseball team played 60 games and won 30% of them. After a phenomenal winning streak this team raised its average to 50%. How many games must the team have won in a row to attain this average?

A30

B24

C12

D20

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

**Explanation:**

explanation: 60----18 wins (18/60)*100=30%.

for 50% they are winning games in row= ((18+x)/(60+x))*100=50%

by solving this we will get x= 24 games.

here x= no of winning games in a row

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7 / 59

**Choose the correct option.**

There are 3 boys and 4 girls. How many ways they are arranged such that boys should be always together ?

A5 ways

B6 ways

C120 ways

D720 ways

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

**Explanation:**

By keeping 3 boys together (1) and arranging 4 girls with them

5! = 5*4*3*2*1 = 120ways. (i.e., 4+1 =5)

Possible arrangements of 3 boys in following ways

3! = 3*2*1 = 6ways

Now, arrange all with the boys together

120*6 = 720ways

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8 / 59

**Choose the correct option.**

3 balls inside a bag having numbers on it written 1, 2, 3 on it. A ball is taken and then put inside it. Find probability that all 3 nos. are the same when it is taken 3 times?

A1/26

B1/27

C1/6

D1/12

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

**Explanation:**

By law of probability = 1/3 * 1/3 * 1/3 = 1/27

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9 / 59

**Choose the correct option.**

Find the coordinates of the midpoint of the line segment joining the points A(-3,2) and B(7,8)

A2,4

B3,3

C2,5

D4,3

ENone of above

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

**Explanation:**

mid point of two point

take two point a(x1,y1) and b(x2,y2)

so mid point is (x1+x2)/2 and (y1+y2)/2

so (-3+7)/2=4/2=2

and (2+8)/2=10/2=5

so mid point is (2,5)

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10 / 59

**Choose the correct option.**

An article costing rs.160 is sold at 15% discount on a mark-up price. What is the selling price after discount?

A124

B126

C136

D140

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

**Explanation:**

As 100 % of CP = 160

100-15 % of CP = SP = (160*85)/100 = 136

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Here is the list of questions asked in MindTree model papers for freshers MindTree online test questions. Practice MindTree Written Test Papers with Solutions and take Q4Interview MindTree Online Test Questions to crack MindTree written round test. Overall the level of the MindTree Online Assessment Test is moderate. Only those candidates who clear the written exam will qualify for the next round, so practic all the questions here and take all the free tests before going for final selection process of MindTree