Exams Questions and Answers

Q:

An observer 1.6 m tall is $20 \sqrt{3}$ away from a tower. The angle of elevation from his eye to the top of the tower is 30º. The heights of the tower is:

A) 21.6 m	B) 23.2 m
C) 24.72 m	D) None of these

Answer & Explanation Answer: A) 21.6 m

Explanation:

Draw BE // CD

Then, CE = AB = 1.6 m,

BE = AC =

$\frac{D E}{\tan 30} = > D E = \tan 30 x 20 \sqrt{3} = > D E = \frac{1}{\sqrt{3}} x 20 \sqrt{3} = 20$

Therefore, CD = CE + DE = (1.6 + 20) m = 21.6 m.

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Filed Under: Height and Distance
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

24 25353

Q:

A cistern is normally filled in 8 hours but takes two hours longer to fill because of a leak in its bottom. If the cistern is full, the leak will empty it in ?

A) 20 hrs	B) 28 hrs
C) 36 hrs	D) 40 hrs

Answer & Explanation Answer: A) 20 hrs

Explanation:

1/8 - 1/x = 1/10

=> x = 40 hrs

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Filed Under: Pipes and Cistern
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

67 25346

Q:

A does half as much work as Band C does half as much work as A and B together. If C alone can finish the work in 40 days, then together ,all will finish the work in ?

A) 17 + 4/7 days	B) 13 + 1/3 days
C) 15 + 3/2 days	D) 16 days

Answer & Explanation Answer: B) 13 + 1/3 days

Explanation:

C alone can finish the work in 40 days.
As given C does half as much work as A and B together
=> (A + B) can do it in 20 days
(A + B)s 1 days wok = 1/20.
A's 1 days work : B's 1 days Work = 1/2 : 1 = 1:2(given)
A's 1 day’s work = (1/20) x (1/3) = (1/60) [Divide 1/20 in the raio 1:2]
B's 1 days work = (1/20) x (2/3) = 1/30
(A+B+C)'s 1 day's work = (1/60) + (1/30) + (1/40) = 9/120 = 3/40

All the three together will finish it in 40/3 = 13 and 1/3 days.

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Filed Under: Time and Work
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Bank Clerk , Bank PO

47 25320

Q:

Physical or logical arrangement of network is

A) Topology	B) Routing
C) Both A & B	D) Networking

Answer & Explanation Answer: A) Topology

Explanation:

The logical arrangement of the nodes of different networks to communicate is called as topology.

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Filed Under: Networking
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer , Network Engineer

41 25316

Q:

Which of the statements given below are correct?

A) United Arab Emirates hosted the Badminton 2017 BWF World Senior Championships.

B) Johanna Konta won the Tennis 2017 Miami Open Women's Singles.

C) Grigor Dimitrov won the Tennis 2017 US Open Men's Singles.

A) Only B	B) Only C
C) B and C	D) A, B and C

Answer & Explanation Answer: A) Only B

Explanation:

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Filed Under: Sports
Exam Prep: Bank Exams

0 25308

Q:

Which of the following number is largest among all?

0.7,0.77,0.077, 0.070707

A) 0.070707	B) 0.077
C) 0.77	D) 0.7

Answer & Explanation Answer: C) 0.77

Explanation:

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

0 25284

Q:

If 6α1 = 70, 2α3 = 50 and 4α5 = 90, then find the value of 1α4 = ?

A) 50	B) 30
C) 10	D) 60

Answer & Explanation Answer: A) 50

Explanation:

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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

2 25277

Q:

In the following question, select the missing number from the given series.

10, 12, 14, 16, 18, ?

A) 22	B) 24
C) 20	D) 26

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