GATE DA topic:computing PYQs & Answers — Page 17

Questions 161–170 of 195. Imported answers require independent review unless marked reviewed.

Consider the following two tables named Raider and Team in a relational database maintained by a Kabadi league. The attribute ID in table Team references the primary key of the Raider table, ID.

Raider:

ID	Name	Raids	RaidPoints
1	Arjun	200	250
2	Ankush	190	219
3	Sunil	150	200
4	Reza	150	190
5	Pratam	175	220
6	Gopal	193	215

Team:

City	ID	BidPoints
Jaipur	2	200
Patna	3	195
Hyderabad	5	175
Jaipur	1	250
Patna	4	200
Jaipur	6	200

The SQL query described below is executed on this database:

SELECT * FROM Raider, Team WHERE Raider.ID=Team.ID AND City="Jaipur" AND RaidPoints > 200;

The number of rows returned by this query is _____.

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The fundamental operations in a double-ended queue D are:

insertFirst(e) – Insert a new element e at the beginning of D. insertLast(e) – Insert a new element e at the end of D. removeFirst() – Remove and return the first element of D. removeLast() – Remove and return the last element of D.

In an empty double-ended queue, the following operations are performed:

insertFirst(10)

insertLast(32)

a ← removeFirst()

insertLast(28)

insertLast(17)

a ← removeFirst()

a ← removeLast()

The value of a is _____.

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Let

be the function

The value of the derivative of

where

is _____ (rounded off to two decimal places).

Note:

denotes the set of real numbers.

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The sample average of 50 data points is 40. The updated sample average after including a new data point taking the value of 142 is _____.

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Consider the

matrix

The determinant of

is _____.

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A fair six-sided die (with faces numbered 1, 2, 3, 4, 5, 6) is repeatedly thrown independently.

What is the expected number of times the die is thrown until two consecutive throws of even numbers are seen?

Your answerChoose one option.

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Let

be a function. Note:

denotes the set of real numbers.

Which ONE of the following choices gives the values of

that make the function

continuous and differentiable?

Your answerChoose one option.

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Consider the following Python code:

def count(child_dict, i):

if i not in child_dict.keys():

return 1

ans = 1

for j in child_dict[i]:

ans += count(child_dict, j)

return ans

child_dict = dict()

child_dict[0] = [1,2]

child_dict[1] = [3,4,5]

child_dict[2] = [6,7,8]

print(count(child_dict,0))

Which ONE of the following is the output of this code?

Your answerChoose one option.

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Consider the function

whose pseudocode is given below:

computes(X)

S[1] ← 1

for i ← 2 to length(X)

S[i] ← 1

if X[i − 1] ≤ X[i]

S[i] ← S[i] + S[i − 1]

end if

end for

return S

Which ONE of the following values is returned by the function

for

Your answerChoose one option.

[1, 1, 2, 3, 4]

[1, 1, 2, 3, 3]

[1, 1, 2, 1, 2]

[1, 1, 2, 1, 5]

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Let

denote the maximum number of comparisons made while searching for an entry in a sorted array of size

using binary search.

Which ONE of the following options is TRUE?

Your answerChoose one option.

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GATE DA topic:computing PYQs

Question 31

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Question 40