认知展示纸|才智集1

这是用于Cognizant技术解决方案面试的能力准备的模型介绍文件。这份安置文件将涵盖在CTS招聘活动中提出的才能问题，并且还将严格遵循在CTS面试中提出的问题模式。建议解决以下每个问题，以增加清除CTS面试的机会。

1. 全班有40位学生，其中14位正在学习数学，29位正在学习计算机。从该组中随机选择的学生仅参加计算机课程的概率是多少?
   a)40％
   b)55％
   c)65％
   d)70％

   Answer: 60%

   Solution:
   There are in total of 40 students. 14 are taking Maths and 29 are taking calculus. Therefore there have to be 3 students who are taking both the classes. So, 29 – 3 = 26 students are taking only Computer. So probability = 26/40 = 13/20 = 65%

2. 找出第二个数字比第一个数字小4的数字，如果数字除以数字的总和，则商将为7。
   a)51
   b)62
   c)73
   d)这些都不是

   Answer: d) None of these

   Solution: If we consider the number 84, then we get 8 – 4 = 4 and when the sum of digits that is 12 divides the number 84, we get 7.

3. 如果所有的6取反并变为9(在1到100之间)，那么所有数字的总和将改变多少(包括两者)?
   a)300
   b)330
   c)333
   d)这些都不是

   Answer: b) 330

   Solution:
   For the 6 at the unit place:
   When the digits are changed to 9, each value will increase by 3. Since there are 10 such numbers, so total increase = 10 * 3 = 30
   For the 6 at 10’s place:
   When the digits are changed to 9, each value will increase by 30. Since there are 10 such numbers, so total increase = 10 * 30 = 300
   So the total increase will be 30 + 300 = 330

4. 拉杰什(Rajesh)和普拉布(Prabhu)去一家书店。拉杰什(Rajesh)买了5支笔，3本笔记本和9支铅笔，用光了她所有的钱。 Prabhu购买了6笔，6笔记本和18支铅笔，价格比Rajesh支付的价格高50％。 Rajesh的钱中有％用在笔上吗?
   a)12.5
   b)62.5
   c)75
   d)无法确定

   Answer: a) 12.5

   Solution:
   Let the amount spent by Rajesh be ‘x’

   According to the question,
   5 pen + 3 notebooks + 9 pecils = x
   and
   6 pens + 6 notebooks + 18 pencils = 1.5x

   By solving both the equations we get,
   pens = 0.125x = 12.5%

5. 在一群乘坐公交车旅行的人中，有6人会说泰米尔语，有15人会说印地语，有6人会说古吉拉特语。在该组中，没有人会说其他任何语言。如果小组中的2个人可以说两种语言，而一个人可以讲全部三种语言，那么小组中有多少个人?
   a)21
   b)22
   c)24
   d)23

   Answer: d) 23

   Solution:
   Assuming the two persons who can speak two languages be Hindi and Tamil and the third person speaks all the three languages.
   Therefore, the number of people who can speak Tamil is 6. Only Tamil = 6 – 2 – 1 = 3
   Therefore, the number of people who can speak Hindi is 15. Only Hindi = 15 – 2 – 1 = 12
   Therefore, the number of people who can speak Gujarati is 6. Only Gujarati = 6 – 1 = 5
   Thus the number of persons who can speak only one language is 3 + 12 + 5 = 20
   Given,
   The number of persons who can speak two languages is 2
   The number of people who speak all three languages is 1
   Therefore the answer is 23.

6. 两辆卡车彼此面对，相距500厘米。每辆卡车以50厘米/秒的速度向前移动100厘米，然后以25厘米/秒的速度向后移动50厘米。他们要碰撞多长时间?
   a)12秒
   b)16秒
   c)13秒
   d)14秒

   答案：d)14秒

   Solution:
   If we observe the series carefully running from time = 2 sec and hence,

   Moving forward:
   At 2 secs each truck will move to a distance of 100cms

   Moving backwards:
   At 4 secs each truck will move to a distance of 50cms

   Moving forward:
   At 6 secs each truck will move to a distance of 150cms

   Moving backwards:
   At 8 secs each truck will move to a distance of 100cms

   Moving forward:
   At 10 secs each truck will move to a distance of 200cms

   Moving backwards:
   At 12 secs each truck will move to a distance of 150cms

   Moving forward:
   At 14 secs each truck will move to a distance of 250cms and in all 500 cms that are the point they must collide.

7. 将964、1238和1400除以余数分别为41、31和51的最大数是多少?
   a)71
   b)58
   c)64
   d)79

   Answer: a) 71

   Solution:
   To reach to the solution we just need to find the HCF of (964 – 41), (1238 – 31), (1400 – 51) = 923, 1207, 1349
   The HCF of 923, 1207 and 1349 = 71

8. 星期一，星期二和星期三的平均气温为37°C，而星期二，星期三和星期四的平均气温为34°C。如果星期四的温度是星期一的4/5，那么星期四的温度是多少?
   a)36°摄氏度
   b)36.5°摄氏度
   c)34°C
   d)35.5°摄氏度

   Answer: a) 36 °C

   Solution:
   According to the question,
   Monday + Tuesday + Wednesday = 37 °C
   Tuesday + Wednesday + Thursday = 34 °C
   Thursday = 4/5 of Monday
   On solving the first two equations and substituting the values from the third condition we get the temperature of Thursday = 36 °C

9. 有6个城市，每个城市相互连接。一个城市从A到B可以追踪多少条不同的路线，从而在任何一条路线中都不会碰到一次以上的城市?
   a)72
   b)65
   c)60
   d)48

   Answer: b) 65

   Solution:
   There must be 1 direct route.
   There are 4 ways to cover 1 city
   There are 4 * 3 = 12 ways to cover 2 cities
   There are 4 * 3 * 2 ways to cover 3 cities
   There are 4 * 3 * 2 * 1 ways to cover 4 cities
   Total ways = 65 ways

10. 5分钟内只有2个人可以说一个秘密。同一个人将秘密告诉另外2个人，依此类推。告诉768个人需要多长时间?
    a)500分钟
    b)50分钟
    c)47.5分钟
    d)49分钟

    Answer: c) 47.5 min 

    Solution:
    One person telling to 2 means he takes 2.5 min to tell the secret to 1 person,
    So 1 person telling the truth to another 2 people and the next two telling the truth to the next two who in turn are telling another 2 people and so on…
    Therefore a series is formed of 1 to 2, 2 to 4, 4 to 8, 8 to 16 and so on…
    Therefore a series of 1, 2, 4, 8, 16, 32,…, 512
    Till 512 it would take
    Till this will take 45 minutes and now these people i.e., 256 will be telling the truth to only 1 of the total person will be 768,
    Therefore, 45 + 2.5 = 47.5 min