THE GATEBOOK Q&A - Recent questions and answers in Aptitude
http://thegatebook.in/qa/qa/aptitude
Powered by Question2AnswerAnswered: Aptitude - Question 13
http://thegatebook.in/qa/3741/aptitude-question-13?show=4496#a4496
<p>The volume of <strong>water displaced</strong> by an object is equal to its immersed volume.</p>
<p><strong>Given</strong></p>
<p>Length=3m, breadth =2m , height(sinked into water)=1.5cm=0.015m</p>
<p>volume of water displaced= 3 * 2 * 0.015 = 0.090 m^3</p>
<p>mass= volume* density</p>
<p>density of water =1000 kg/m^3</p>
<p>therefore</p>
<p>mass= 0.090 * 1000 = 90 kg</p>
<p>which is the required answer.</p>
<p> </p>Aptitudehttp://thegatebook.in/qa/3741/aptitude-question-13?show=4496#a4496Mon, 10 Jun 2019 10:29:50 +0000Answered: Aptitude - Question 7
http://thegatebook.in/qa/3735/aptitude-question-7?show=3805#a3805
What about sentence A. Should it not be "less than the service charges..."? Please explain.Aptitudehttp://thegatebook.in/qa/3735/aptitude-question-7?show=3805#a3805Mon, 13 May 2019 16:53:52 +0000Answered: Aptitude - Question 3
http://thegatebook.in/qa/3731/aptitude-question-3?show=3780#a3780
intimate: close (nearly same use)<br />
<br />
Evanescent (vanish): permanency (opposite meaning)<br />
Articulate (clear and distinct /capable of speech): speech<br />
Enclose: parenthesis (parenthesis encloses)<br />
Obsessed: attracted (nearly same use)Aptitudehttp://thegatebook.in/qa/3731/aptitude-question-3?show=3780#a3780Sat, 11 May 2019 12:24:54 +0000Answered: Aptitude - Question 8
http://thegatebook.in/qa/3736/aptitude-question-8?show=3772#a3772
<p>Wikileaks is the website which leaks top secret documents of Governments,military etc. So, if such secret documents are out in the public, it doesnt strengthen or promote military operations. Such leaking doesnt disturb the operations, but actually jeopardizes(poses a threat to) execution of Military operations. <strong>So, OPTION C should be the right answer.</strong></p>Aptitudehttp://thegatebook.in/qa/3736/aptitude-question-8?show=3772#a3772Sat, 11 May 2019 06:49:38 +0000Answered: Aptitude - Question 4
http://thegatebook.in/qa/3732/aptitude-question-4?show=3771#a3771
<p>Wikileaks is the website which leaks top secret documents of Governments,military etc. So, if such secret documents are out in the public, it doesnt strengthen or promote military operations. Such leaking doesnt disturb the operations, but actually jeopardizes(poses a threat to) execution of Military operations. <strong>So, OPTION C should be the right answer.</strong></p>Aptitudehttp://thegatebook.in/qa/3732/aptitude-question-4?show=3771#a3771Sat, 11 May 2019 06:48:34 +0000Answered: Aptitude - Question 17
http://thegatebook.in/qa/3745/aptitude-question-17?show=3768#a3768
Finally, the buyer paid Rs 2200 after a year.<br />
<br />
Let Principal amount be P<br />
<br />
then P+10%of P = 2200.<br />
<br />
P=2000<br />
<br />
2000-1975=25<br />
<br />
Gains Rs. 25Aptitudehttp://thegatebook.in/qa/3745/aptitude-question-17?show=3768#a3768Sat, 11 May 2019 06:00:38 +0000Answered: Aptitude - Question 14
http://thegatebook.in/qa/3742/aptitude-question-14?show=3767#a3767
it is application of trigonometry <br />
<br />
cos 60 = shadow length /ladder length <br />
<br />
laddar length is 7.2mAptitudehttp://thegatebook.in/qa/3742/aptitude-question-14?show=3767#a3767Sat, 11 May 2019 05:58:01 +0000Answered: Aptitude - Question 11
http://thegatebook.in/qa/3739/aptitude-question-11?show=3766#a3766
<p>V / A = 3 / 4</p>
<p>Let the common factor be 'x'.</p>
<p>V = 3x & A = 4x be their present ages.</p>
<p>After 5 years, V = 3x + 5 & A = 4x + 5</p>
<p>3x + 5 / 4x + 5 = 7 / 9</p>
<p>So, 27x + 45 = 28x + 35</p>
<p>So, x = 10</p>
<p>Now, V = 3x = 3 * 10 = 30</p>
<p>Hence, present age of Vikas is 30 years.</p>
<p>Ans.: <strong>30 years</strong></p>Aptitudehttp://thegatebook.in/qa/3739/aptitude-question-11?show=3766#a3766Sat, 11 May 2019 05:56:55 +0000Answered: Aptitude - Question 12
http://thegatebook.in/qa/3740/aptitude-question-12?show=3764#a3764
60 % passed in GATE 45 % passed in CET 25 % passed in both <br />
<br />
total passed in GATE or CET = 60 +45 -25 =80<br />
<br />
20 % failed <br />
<br />
probability is 1/5Aptitudehttp://thegatebook.in/qa/3740/aptitude-question-12?show=3764#a3764Sat, 11 May 2019 05:53:58 +0000Answered: Aptitude - Question 9
http://thegatebook.in/qa/3737/aptitude-question-9?show=3762#a3762
<p>(a-b)^2 = (a^2 +b^2) - 2*(a*b)</p>
<p>(a-b)^2 = 89 - 2*40</p>
<p>(a-b)^2 = 89 - 80 = 9</p>
<p>So, (a-b) = 3</p>
<p>Ans.: <strong>3</strong></p>Aptitudehttp://thegatebook.in/qa/3737/aptitude-question-9?show=3762#a3762Sat, 11 May 2019 05:49:32 +0000Answered: Aptitude - Question 10
http://thegatebook.in/qa/3738/aptitude-question-10?show=3761#a3761
two fair coin when tossed sample space is <br />
<br />
H H <br />
<br />
H T<br />
<br />
T H <br />
<br />
T T<br />
<br />
one is know to be tail we have three such cases <br />
<br />
both will be tail is TT one out of 3<br />
<br />
1/3 answerAptitudehttp://thegatebook.in/qa/3738/aptitude-question-10?show=3761#a3761Sat, 11 May 2019 05:49:02 +0000Answered: Aptitude - Question 6
http://thegatebook.in/qa/3734/aptitude-question-6?show=3759#a3759
<p>Whenever the word 'were' is used, we should prefer the usage of the word 'would' instead of 'shall' or 'should'.</p>
<p>Moreover, 'were' is 2nd form of verb.</p>
<p>Ans.: <strong>would fly</strong></p>Aptitudehttp://thegatebook.in/qa/3734/aptitude-question-6?show=3759#a3759Sat, 11 May 2019 05:45:38 +0000Answered: Aptitude - Question 1
http://thegatebook.in/qa/3729/aptitude-question-1?show=3756#a3756
Each number is a digit by digit description of the previous number.<br />
So,<br />
<br />
3 = One 3 --> 13.<br />
13 = One 1, One 3 --> 1113.<br />
1113 = Three 1, One 3 --> 3113.<br />
3113 = One 3, Two 1, One 3 --> 132113.Aptitudehttp://thegatebook.in/qa/3729/aptitude-question-1?show=3756#a3756Sat, 11 May 2019 05:41:25 +0000Answered: Aptitude - Question 15
http://thegatebook.in/qa/3743/aptitude-question-15?show=3755#a3755
Area = length * breadth <br />
<br />
length decreased by 20 % <br />
<br />
length be l and breadth be b<br />
<br />
new legth be 0.8 of l <br />
<br />
new breadth be 0.9 of b<br />
<br />
new area 0.8l * 0.9b = 0.72 lb<br />
<br />
decrese in area is 28 %.Aptitudehttp://thegatebook.in/qa/3743/aptitude-question-15?show=3755#a3755Sat, 11 May 2019 05:41:16 +0000Answered: Aptitude - Question 5
http://thegatebook.in/qa/3733/aptitude-question-5?show=3754#a3754
<p>(a-b)^2 = (a^2 +b^2) - 2*(a*b)</p>
<p>(a-b)^2 = 89 - 2*40</p>
<p>(a-b)^2 = 89 - 80 = 9</p>
<p>So, (a-b) = 3</p>
<p>Ans.: <strong>3</strong></p>Aptitudehttp://thegatebook.in/qa/3733/aptitude-question-5?show=3754#a3754Sat, 11 May 2019 05:38:11 +0000Answered: Aptitude - Question 16
http://thegatebook.in/qa/3744/aptitude-question-16?show=3753#a3753
A.T.Q<br />
<br />
let the number of notes of each denomination be x<br />
<br />
1*x + 5*x +10* x =128 <br />
<br />
x =8 <br />
<br />
total notes he has 3*x<br />
<br />
24Aptitudehttp://thegatebook.in/qa/3744/aptitude-question-16?show=3753#a3753Sat, 11 May 2019 05:33:09 +0000Answered: Aptitude - Question 2
http://thegatebook.in/qa/3730/aptitude-question-2?show=3752#a3752
<p>Even though the word 'hour' is starting with 'h', the pronounciation of 'hour' is 'our' because 'h' is silent. Moreover, 'o' is a vowel. So, we write the article 'an' before the word 'hour'. </p>
<p>Ans.: <strong>an</strong> hour </p>Aptitudehttp://thegatebook.in/qa/3730/aptitude-question-2?show=3752#a3752Sat, 11 May 2019 05:32:43 +0000Answered: Aptitude - Question 18
http://thegatebook.in/qa/3746/aptitude-question-18?show=3751#a3751
this can be solved by knowledge of upstream and downstream <br />
<br />
and relation between time ,speed and distance.<br />
<br />
let speed of boat =xkmph<br />
<br />
A.T.Q<br />
<br />
6/(x+2) +6/(x-2) = 33/60<br />
<br />
solve this eqn to get answer,you can check by option alsoAptitudehttp://thegatebook.in/qa/3746/aptitude-question-18?show=3751#a3751Sat, 11 May 2019 05:31:00 +0000Answered: Aptitude - Question 19
http://thegatebook.in/qa/3747/aptitude-question-19?show=3750#a3750
A finish in 30 min<br />
<br />
B finish in 20 min <br />
<br />
C can finish in 10 min<br />
<br />
Total capacity can be assumed to be lcm (30,20,10) that is 60.<br />
<br />
A discharge 60 /30 i.e. 2 unit of P in 1 minutes<br />
<br />
B discharge 60/20 i.e. 3 unit of Q in 1 minutes.<br />
<br />
C discharges 60/10 6 unit of R in 1 minutes .<br />
<br />
All worked for 3 minutes ,proportion of R in solution is<br />
<br />
6*3/(2*3 +3*3 +2*3)==6/11Aptitudehttp://thegatebook.in/qa/3747/aptitude-question-19?show=3750#a3750Sat, 11 May 2019 05:27:28 +0000Answered: Aptitude - Question 20
http://thegatebook.in/qa/3748/aptitude-question-20?show=3749#a3749
A can finish complete work in 24 days <br />
<br />
B can finish complete work in 30 days<br />
<br />
total work can be assumed as LCM (24, 30 ) that is 120 units.<br />
<br />
amount of work done by A in 1 day is 5 units .<br />
<br />
similarly for B it is 4 units.<br />
<br />
now total time taken if both work <br />
<br />
120 /9 that is 13.33Aptitudehttp://thegatebook.in/qa/3748/aptitude-question-20?show=3749#a3749Sat, 11 May 2019 05:20:51 +0000