TCS Placement Questions & Answers :: TCS
31 / 649
If x2 < 1/100 and x< 0, What is the tightest range in which x can lie?
A-1/10 < x < 0
B-1 < x < 0
C-1/10 < x < 1/10
D-1/10
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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32 / 649
How many 6 digit telephone numbers can be formed if each number starts with 35 and no digit appears more than once?
A720
B360
C1420
D1680
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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33 / 649
The least number which when divided by 48, 60, 72, 108 and 140 leaves 38, 50, 62, 98 and 130 as remainders respectively, is:
A4562
B15110
C2135
D7589
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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34 / 649
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?
AMonday
BWednesday
CSunday
DTuesday
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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35 / 649
Question: A turtle is crossing a field. What is the total distance (in meters) passed by turtle?
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
AStatement X alone is enough to get the answer
BBoth statements X and Y are needed to get the answer
CStatement Y alone is enough to get the answer
DData inadequate
Answer: Option B
Explanation:Here is no explanation for this answer
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36 / 649
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?
A1/2
B1/3
C2/3
DNone of these
Answer: Option B
Explanation:Here is no explanation for this answer
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37 / 649
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?
A8.5 miles/hr.
B7 miles/hr.
C7.5 miles/hr.
DNone of these
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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38 / 649
If log 0.318=0.3364 and log 0.317=0.33320 then log 0.319 =?
A0.33365
B0.3368
C0.3396
D0.3369
Answer: Option C
Explanation:log 0.319=log0.318+(log0.318-log0.317) = 0.3396
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39 / 649
Five college students met at a party and exchanged gossips. Uma said, â€œOnly one of us is lyingâ€. David said, â€œExactly two of us are lyingâ€. Thara said, â€œExactly 3 of us are lyingâ€. Querishi said, â€œExactly 4 of us are lyingâ€. Chitra said â€œAll of us are lyingâ€. Which one was telling the truth?
ADavid
BQuerishi
CChitra
DThara
Answer: Option B
Explanation:Here is no explanation for this answer
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40 / 649
A clock showed 5 min past 3'0 clock on Sunday evening when the correct time was 3'0 clock it looses uniformly and was observed to be 10 min slow on the subsequent Tuesday at 9pm . when did the clock show the correct time
A10 AM Monday
B10 PM Monday
C9 PM Monday
D9 AM Monday
Answer: Option D
Explanation:Clock showed 5 min past 3'0 clock on Sunday evening when the correct time was 3'0 clock.
It looses uniformly and was observed to be 10 min slow on the subsequent Tuesday at 9pm .
In 54 hrs , it lost 15 mins.
so 5 mins are lost in 5*54/15 = 18 hrs
so watch showed correct time at 1500+1800-2400= 0900 hrs on Monday i.e 9AM Monday
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