TCS 2015 off campus all india exam held on 20th February questions-3
1.A passenger train takes 5hrs less for a journey of 396 kmif its speed is increased by 55kmph from its normal speed.The normal speed (to the nearest kmph) is
a)None b)44 c)55 d)66
2.The value of the expression
Can be altered by including parenthesis.If we are allowed to place as many parenthesis as we want,how many distinct values can be obtained from this expression?
Clue:which of the numbers can appear in the numerator and which are in the denominator of the fraction obtained after inserting parenthesis?
a)32 b)64 c)16 d)128
3.A pair of 8 slided dice has sides numbered 1 to 8.Each side has same probability or chance of landing face up.The probability that the product of 2 numbers on the sides that land face up exceeds 36 is
a)11/64 b)5/32 c)3/16 d)1/4
4.A series of books was published at 10years intervals when the 10th book was issued the sum of publication years was 19,560when was the 1st book published
a)1910 b)1914 c)1911 d)1909
5.given the digits 1,3,6,9 find the probability that a 3 digit number formed by using them with no digit repeated is divisible by 4
a)None b)1/4 c)1/6 d)1/12
6. An entry in an unshaded square is obtained by adding the entries connected to it from the row above (11 is one such number). Write the value of n.
a)10 b)11 c)9 d)none
7.While planning their outing,abhishek understood that their boat could travel with a speed of 12kmph in still water.The group decided to travel 24 minutes downstream.Aarti had prior experience in that route and mentioned that the speed of stream was 4kmph.How many kms will the group travel downstream?
a)6.4 b)3.2 c)4 d)4.8
8.The diagonal of a square is twice the side of an equatorial triangle.The ratio of the area of the triangle to the area of square is
a)sqrt(3):8 b)sqrt(2):4 c)sqrt(2):5 d)sqrt(3):6
9.On a 26-question test, five points were deducted for each wrong answer and eight points were added for each correct answer. If all the questions were answered, how many were correct if the score was zero?
10.Adarsh went to a casino with Rs.6400 and played a certain game 6 times.Each time he bet half the money he had the time the chance of winning this game was ½ and adharsh won three of the 6 games even though he did not remember which 3 games he won.In each of these games he won the amount equal to his bet.After the 6 games the money was
a)3200 b)2700 c)1280 d)cannot be
11.Jake runs faster than paul.Jake and paul each walk 24kms.the sum of the speeds is 7km/hr and the sum of the time taken by them is 14 hrs then jake’s speed is?
a)6kmph b)2kmph c)4kmph d)8 kmph
12.If (3a+6b)/(5a+12b)=12/23 determine the value of 3a2+5b2/ab
a)19/2 b)32/3 c)9 d)31/3
13.Y can do a work in 2/3 the time it takes X.Z can do the same work in ¾ the time it takes Y.When all three are typing at the same time what fraction of their total work does Y do
a)1/3 b)4/13 c)9/23 d)8/29
14.The number of different non congruent triangles with integer side and perimeter 15 is
a)9 b)7 c)10 d)6
15.The number of committes of size 10 that could be formed from 10 men & 10 women such that committee has atleast 6 women is
a)60626 b)210 c)10210 d)none
16.How many positive multiples of 10 that are less than 1000 are the sum of 4 consecutive integers
a)51 b)50 c)49 d)none
17.I just finished 3 marble games & have 21 marbles.In the 1st game I lost half of my marbles.Inthe 2nd game I won 11 times what I had at the end of the 1stgame.In the 3rd game I won 9 marbles.How many marbles Did I have when I started playing?
a)6 b)4 c)8 d)2
18.A shop sells chocolates,it used to sell chocolates for Rs4.50 each but there were no sales at that price.When it reduced the price all chocolates sold but enabling to realize at 342.86 from chocolates alone.If the new price was not less than half of the original price.How many chocolates are sold
a)62 b)79 c)65 d)81
19. Four of the six numbers is 1867456,1993764,2019657,2025189,2109472,2121346 have a mean of 2068916.What is the mean of other two numbers
a)2006710.5 b)2067330.5 c)1930610 d)2022423
20.Let f be a function such that f(f(x))=f(x+2)-3 for all intergersx,if f(1)=4 and f(4)=3,then f(5) is
a)12 b)15 c)6 d)9
21. George, Paul and Hari start a business by contributing Rs. 30000/-, Rs. 40000/- and Rs. 50000/- respectively. After ½ a year George withdraws half his contribution. At the end of the year the business showed a profit of Rs 90000 which was divided amongst the 3 men proportionate the to amount and duration of their investment in the enterprise. Paul got,
a) Rs 25000 b)Rs 18000 c) Rs 32000 d)Rs 24000
a) Rs 25000 b)Rs 18000 c) Rs 32000 d)Rs 24000
22.The sum of first n terms in a sequence is always 1/n.Find the product of the first 2014 terms (n! denotes the factorial of n,that is the product of the numbers(1,2……n))
23.Inabhi’s class of 44 students,28 students speak malayalam,26 students speak tamil,9 students speak none of the two languages.How many students speak both tamil& Malayalam
a)54 b)38 c)19 d)10
24.If [x] denotes greatest integer less than equal to x,the value of ∑[log2n] ,n ranging from 1 to 1024 is
a)2048 b)8204 c)1024 d)10120
25.A sequence u1,u2……….is defined by u1=√2,u2=π,un=un-1-un-2 for n>=3.What is u1000?
a)1000(√2-1000π) b)-√2 c)π d)1000√2 –π
26.A swimming pool whos surface forms a rectangle measures 25 m long by 15 m wide The pool is 2 m deep at the shallow end and the depth increases at a constant rate to 4 m deep at the other end How many cubic meters of water will pool hold
a)1250 b)975 c)1000 d)1125
27.The sum of two numbers is 2016 and their product is 32.The sum of their reciprocals is
a)63 b)9 c)32+√2014 d)32-√2014
28.100 students appeared for two different examinations 60 passed the first,50 the second and 30 both the examinations.Find the probability that a student selected at random failed in both the examination
a)5/6 b)1/5 c)1/7 d)5/7