Cognizant Previous Year Placement Papers 2021 PDF

Solution: Option D
Explanation:

If the question states x, y have to be distinct, then the best solution would be x = 350, y = 700, HCF = 350.

So the HCF is 525.

The question is "What is the maximum value of the HCF between x and y?"
Hence the answer is "525"

Choice D is the correct answer.

Solution: Option C

Explanation:

Any factor of this number should be of the form 2^a * 5^b * 7^c.
For the factor to be an odd number,
a should be 0.
b can take values 0, 1, 2, 3.
and c can take values 0, 1, 2, 3, 4.
Total number of odd factors = 4 * 5 = 20.

xy = 4
xy could be 2 *2 or 4 * 1
221
222 These are the possible triangles.
223
441

22x will be a triangle if x is 1, 2 or 3 (trial and error).
44x is a triangle only if x is 1.
1. 221 is acute. 1² + 2² > 2²
2. 222 is equilateral. So acute.
3. 223 is obtuse. 2² + 2² < 3²
4. 144 is acute. 1² + 4² > 4²

The question is " x, y, z are integer that are side of an obtuse-angled triangle. If xy = 4, find z."
And so, the third side has to be 3

Hence, the answer is 3.

Solution: Option D

Explanation:
Let the total distance be x, then

[{(2/3) x }/6 ] + [{(1/3) x }/7 ] = 7/5
x/9 + x/21 = 7/5
7x = 63
x = 9
Therefore, total distance = 6 km

Solution:10%
Explanation:
Given:
Sum of money amounts in 2 yrs = Rs. 2420
Sum of money amounts in 3 yrs = Rs. 2662
So, interest on Rs.2420 for 1 yr = 2662 - 2420
= Rs. 242
SI = PNR/100
242 = (2420 x 1 x R)/100
R = (242 x 100)/2420
R = 10%.

Solution: Option D

Explanation:

Solution:691
Explanation:
Given: 584 412 613 365 256 825
If the position of the first and second digits are interchanged, series becomes
854 142 163 635 526 285
Difference between highest and lowest number = 854 - 163 = 691.

Solution: Option B
Explanation:
kamya\'s brother-in-law is the son of Ramya means Ramya is Kamya\'s mother-in-law. Kamya\'s husband is Ramya\'s son i.e. Kamya\'s husband is Ramya\'s husband\'s son.

SOLUTION: Option A

Explanation:

Clearly every letter is increased by 1 as
M +1 N
A +1 B
D +1 E
R +1 S
A +1 B
S +1 T

So after increasing every character in work BOMBAY by 1, we get

Option D

Explanation:

The free passes given to railway employees is a privilege for them, not their right. So, argument I does not hold. Argument II seems to be vague.

Explanation:

UNCOUTH meaning lacking good manners
The other word mentioned in the options have following meanings.

Skilful -very good at doing something
Pure - not mixed with anything else
Graceful - having a smooth, attractive movement or form

Solution: The Apple of Discord is a small issue that can lead to the core, core, core, or major debate of the debate.

Explanation: Land is an apple of discord between two brothers.

But some people young and old alike remain calm when death suddenly presents itself and this calmness may on occasion be life-saving.

‘Expressed’ is out of context. The phrase ‘without wasting’ indicates that the business deal has been completed, so ‘damaged’ can’t be used. ‘Facilitated’ means, to make something easier, it fits, but is less suitable than clinched. ‘Clinched’ must be used as it particularly refers to grabbing the business settlement without wasting time.

The maddening traffic congestion at the junction outside the University every day is not only because four roads converge at one point. Potholes, waterlogging and dug up roadsides are also to blame. Evacuation of traffic from each of the four arterial roads is a task as these hurdles slow down the vehicles. Peak hour traffic then piles up for several km on all the four roads. The daily commuters often fume at the wastage of time and fuel.

You are devoted ‘to’ something; not ‘of, at, for’. Thus the preposition that must be used after devoted is 'to

'Worsening' means make or become worse. Options improve, ameliorate and recover are antonyms of the given word as they all refer to making or becoming better. Only option aggravate which means make (a problem, injury, or offence) worse or more serious is a synonym for the given word.

While changing statements spoken in the direct speech into indirect speech, verbs such as ‘said’ is followed by ‘that’. Future continuous tense verb ‘will be going’ changes to past, ‘would be going’. The first person pronoun ‘we’ needs to be changed too, to third person ‘they’, also the time word ‘tomorrow’ changes to ‘the next day’ Thus, the given sentence can be written as, ‘She said that they would be going to the national zoo, the next day’. The other sentences are incorrect because they do not change the verbs. The first sentence and second sentences are in the direct sentence format, however both are incorrect as first uses ‘asked’ which should be used for a question

The correct tense here is present perfect continuous (have+ be + verb- ing) as can be understood from the word 'since'. Option 1 does not make any sense here and option 2 is grammatically incorrect.

‘Portuguese’ in option 4 is the correct spelling which means ‘a native from Portugal’.

Solution: Option D
Explanation:

If the question states x, y have to be distinct, then the best solution would be x = 350, y = 700, HCF = 350.

So the HCF is 525.

The question is "What is the maximum value of the HCF between x and y?"
Hence the answer is "525"

Choice D is the correct answer.

Solution: Option C

Explanation:

Any factor of this number should be of the form 2^a * 5^b * 7^c.
For the factor to be an odd number,
a should be 0.
b can take values 0, 1, 2, 3.
and c can take values 0, 1, 2, 3, 4.
Total number of odd factors = 4 * 5 = 20.