# Placement Questions & Answers :: TCS

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**TCS Practice Q&A**

31. In a certain code, '37' means 'which class' and '583' means 'caste and class'.What is the code for 'caste'?

**Answer:**** Option E **

**Explanation:**

37....=> which class

583....=>caste and class

in the above 2 statements CLASS is common=>code of class=3 then code of CASTE may be either 5 or 8

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32. If x2 < 1/100 and x< 0, What is the tightest range in which x can lie?

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

**Explanation:**

Given x2 < 1/100

so, x < 1/10 or x > - 1/10 first statement

also, as per question x < 0 second statement

so, intersection of both statement will be

- 1/10 < x < 0

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33. How many 6 digit telephone numbers can be formed if each number starts with 35 and no digit appears more than once?

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

**Explanation:**

6 digits telephone number can be formed by 10 digits (0,1,2...9)

As Given, each number start with 35.

So we have 8 digits remaining and 4 place.

So, 4 places can be formed in 8*7*6*5=1680.

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34. The least number which when divided by 48, 60, 72, 108 and 140 leaves 38, 50, 62, 98 and 130 as remainders respectively, is:

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

**Explanation:**

(48 - 38 ) = ( 60 - 50 ) = ( 72 - 62 ) = ( 108 - 98 ) = ( 140 - 130 ) = 10 in every case

Leat number will be LCM of ( 48, 60, 72, 108, 140 ) - 10

LCM = 15120

So, required number = 15120 - 10 = 15110

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35. If a person has to work 8 continuous day & he gets a rest on the 9th day. If a person starts on Monday. What is the day of 12th rest day?

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

**Explanation:**

1st rest day on 9th day ,

so 12th rest day on 108th day... 1wk=7days.

108/7 reminder=3. 3rd day is rest day.

work started on monday so 3rd day is wed.

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36. A turtle is crossing a field. What is the total distance (in meters) passed by turtle? Consider the following two statements (X) The average speed of the turtle is 2 meters per minute (Y) Had the turtle walked 1 meter per minute faster than his average speed it would have finished 40 minutes earlier

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

**Explanation:**

Here is no explanation for this answer

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37. Aniket and kumari are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.What is the probability that the other kid is also a girl?

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

**Explanation:**

Here is no explanation for this answer

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38. A girl rode her bicycle from home to school, a distance of 15 miles, at an average speed of 15 miles per hour. She returned home from school by walking at an average speed of 5 miles per hour. What was her average speed for the round trip if she took the same route in both directions?

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

**Explanation:**

Avg speed=(total disance)/(total time)

Total distance= 15+15 = 30 miles.

Total time= 1+3=4 hrs.

So average Spedd = 30/4 = 7.5 miles/hr.

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39. If log 0.318=0.3364 and log 0.317=0.33320 then log 0.319 =?

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

**Explanation:**

log 0.319=log0.318+(log0.318-log0.317) = 0.3396

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40. Five college students met at a party and exchanged gossips. Uma said, “Only one of us is lying”. David said, “Exactly two of us are lying”. Thara said, “Exactly 3 of us are lying”. Querishi said, “Exactly 4 of us are lying”. Chitra said “All of us are lying”. Which one was telling the truth?

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

**Explanation:**

Here is no explanation for this answer

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