= Search

Q:

The diagonal of a rectangle is $\sqrt{41}$ cm and its area is 20 sq. cm. The perimeter of the rectangle must be:

A) 18	B) 28
C) 38	D) 48

Answer & Explanation Answer: A) 18

Explanation:

$\sqrt{(l^{2} + b^{2})} = \sqrt{41}$ (or) $l^{2} + b^{2} = 41$

Also, $l b = 20$

${(l + b)}^{2} = l^{2 +} b^{2} + 2 l b$ = 41 + 40 = 81

(l + b) = 9.

Perimeter = 2(l + b) = 18 cm.

Report Error

View Answer Report Error Discuss

Filed Under: Area
Exam Prep: CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

Q:

The diagonal of the floor of a rectangular closet is 7 $\frac{1}{2}$ feet. The shorter side of the closet is 4 $\frac{1}{2}$ feet. What is the area of the closet in square feet?

A) 9	B) 18
C) 27	D) 36

Answer & Explanation Answer: C) 27

Explanation:

Other side = $\sqrt{d^{2} - s^{2}}$ = $\sqrt{(\frac{225}{4} - \frac{81}{4})}$ = $\sqrt{\frac{144}{4}}$ = 6 ft

Area of closet = (6 x 4.5) sq. ft = 27 sq. ft.

Report Error

View Answer Report Error Discuss

Filed Under: Area
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

Q:

Does the minimum spanning tree of a graph give the shortest distance between any 2 specified nodes?

A) Yes	B) No
C) May be Yes or No	D) None

Answer & Explanation Answer: B) No

Explanation:

No.Minimal spanning tree assures that the total weight of the tree is kept at its minimum. But it doesn’t mean that the distance between any two nodes involved in the minimum-spanning tree is minimum.

Report Error

View Answer Report Error Discuss

Filed Under: Database
Job Role: Database Administration

Q:

Which among the following is the disadvantage of circular list?

A) An info field that contains the information stored in the node	B) Can’t traverse the list backward
C) A pointer to the node is given we cannot delete the node	D) Both 2 and 3

Answer & Explanation Answer: D) Both 2 and 3

Explanation:

Both 2 and 3 are clearly the diadvantages of circular list

Report Error

View Answer Report Error Discuss

Filed Under: Database
Job Role: Database Administration

Q:

The capacity to change the conceptual schema without having to change external schemas or application programs is called

A) Physical Data Independence	B) Logical Data Independence
C) Both A and B	D) None

Answer & Explanation Answer: B) Logical Data Independence

Explanation:

LDI is the capacity to change the conceptual schema without having to change external schemas or application programs.

Report Error

View Answer Report Error Discuss

Filed Under: Database
Job Role: Database Administration

Q:

If $n C_{10} = n C_{12}$ then,find n.

A) 10	B) 12
C) 22	D) 24

Answer & Explanation Answer: C) 22

Explanation:

Using, ${}^{n}C_{r} = {}^{n}C_{n - r}$ we get

n – 10 = 12

or, n = 12 + 10 = 22

Report Error

View Answer Report Error Discuss

Filed Under: Permutations and Combinations

Q:

A subset of the database which contain virtual data that is derived from the database files but is not explicitly stored is called

A) Touple	B) View
C) Relation	D) Key

Answer & Explanation Answer: B) View

Explanation:

A view may be a subset of the database or it may contain virtual data that is derived from the database files but is not explicitly stored .

Report Error

View Answer Report Error Discuss

Filed Under: Database
Job Role: Database Administration

Q:

onclick="window.open()":This attribute of HTML control is used to open a page in new window

A) TRUE

B) FALSE

Answer & Explanation Answer: A) TRUE

Explanation:

To open a page in a new window, you have to use client script using onclick="window.open()" attribute of HTML control.

Workspace

Report Error

View Answer Workspace Report Error Discuss

Subject: .NET
Job Role: Software Architect

Searching for "="

Quick Links