Delhi University MCA 2020 Previous Year Question Paper and Solution with PDF

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Delhi University MCA
Previous Year Questions

Delhi University MCA
Previous Year Questions
Delhi University MCA

Delhi University MCA Previous Year Questions (PYQs)

Delhi University MCA 2020 PYQ

Qus : 1

Find the odd man out:

1, 4, 27, 16, 125, 36, 216, 64, 729, 100

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Solution

The pattern of the series is 1³, 2², 3³, 4², 5³, 6², 7³. .....

Odd Term 216.

Qus : 2

An athlete has to cover a distance of 6 Kms in 90 Minutes. He covers two-third of the distance in two-thirds of the total time. To cover the remaining distance in the remaining time, his speed should be____ Km/Hr. ?

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Solution

An athlete needs to cover 6 km in 90 minutes.

Given that he covers 2/3 of the distance in 2/3 of the total time

⇒ he covers 2/3 of 6 km in two-thirds of 90 minutes

⇒ He covers 4 km in 60 minutes.

Now he needs to cover the remaining 2 km in remaining 30 minutes

Distance = 2 km

Time =30 minutes =1/2 hour

Required Speed =2/(1/2)km/hr = 4km/hr

Qus : 3

A and B can complete a work in 15 days. B and C can complete the same work in 20 days. If A, B and C together can finish it in 10 days, then A and C can complete the same work in____days.

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Solution

One Day work of A+B = 1/15

One Day work of B+C = 1/20

Lwt One Day work of A+C = 1/x

One Day work of A+B+C = 1/10

2.One Day work of A+B+C =(One Day work of A+B)+(One Day work of B+C)+(One Day work of A+C)

$\frac{2}{10}=\frac{1}{15}+\frac{1}{10}+\frac{1}{x}$

x=12

A+C can complete the same work in 12 days.

Qus : 4

If 2^x = (1024)^1/5, what is the value of x ?

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Solution

$2^x=1024^\frac{1}{5}$

$2^x=(2^{10})^{1/5}$

$2^x=2^{10/5}$

$2^x=2^2$

$x=2$

Qus : 5

Two trains each 500 metres long, are running in opposite directions on parallel tracks. If their speeds are 50 km/hr and 40 km/hr respectively, the time taken by the slower train to pass the driver of the faster one is _______seconds

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Solution

Relative speed = (50 + 40) km/hr

=(

$90\times\frac{5}{18}$ )m/sec

=25 m/sec.

We have to find the time taken by the slower train to pass the Driver of the faster train and not the complete train.

So, distance covered = Length of the slower train.

Therefore, Distance covered = 500 m.

∴ Required time (

$500×\frac{1}{25}$ )=20sec.

Qus : 6

The speed of a boat in still water is 12 km/hr and the rate of current is 3 km/hr. The distance travelled downstream in 30 minutes is

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Solution

Speed downstream = (12 + 3) kmph = 15 kmph.

Distance travelled =

$15 \times \frac{30}{60}$ km = 7.5km.

Qus : 7

Which one of the following is in built data structure of C language?

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Qus : 8

Which of the following operators in C language has right to left associativity:

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Qus : 9

The following in C language is valid

Variable = expression l ? expression 2: expression 3

It represents a (an)

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Qus : 10

Which one of the following is incorrect in C language?

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Qus : 11

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Qus : 12

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Qus : 13

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Qus : 14

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Qus : 15

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Qus : 16

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Qus : 17

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Qus : 18

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Qus : 19

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Qus : 20

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Qus : 21

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Qus : 22

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Qus : 23

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Qus : 24

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Let U and V be vector spaces.

Then they are isomorphic iff there is a bijection from a basis of U to a basis of V.

The isomorphism is the basis changer function.

This means that if U and V are finite-dimensional vector spaces, they are isomorphic iff dim(U)=dim(V).

Qus : 25

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Qus : 26

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Qus : 27

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Qus : 28

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Qus : 29

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Qus : 30

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Qus : 31

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Qus : 32

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Qus : 33

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Qus : 34

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Qus : 35

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Delhi University MCA

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Syllabus, Notification
and More.

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Delhi University MCA

Online Test Series,
Information About Examination,
Syllabus, Notification
and More.

Click Here to
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