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Q:

A man rows his boat 60 km downstream and 30 km upstream taking 3 hrs each time. Find the speed of the stream ?

A) 5 kmph	B) 10 kmph
C) 15 kmph	D) 45 kmph

Answer & Explanation Answer: A) 5 kmph

Explanation:

Speed of the boat downstream s=a/t= 60/3 = 20 kmph

Speed of the boat upstream s= d/t = 30/3= 10 kmph

Therefore, The speed of the stream = $\frac{s p e e d o f d o w n s t r e a m - s p e e d o f u p s t r e a m}{2}$ =5 kmph

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Filed Under: Boats and Streams
Exam Prep: GATE
Job Role: Bank Clerk

Q:

If the first and second digits are interchanged in each number from the following set of numbers, and then the numbers are arranged in descending order, which number will be second ?

376 438 476 389 567

A) 376	B) 567
C) 389	D) 476

Answer & Explanation Answer: D) 476

Explanation:

Given 376 438 476 389 567

After interchanging 1st and 2nd digits

736 348 746 839 657

Now, arranging in descending order 839 746 736 657 348

Here in second place 746

Therefore, 476 is the answer.

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Filed Under: Logical Sequence of Words
Exam Prep: Bank Exams
Job Role: Bank Clerk

Q:

The Good Governance Day (GGD) is observed on which day in India?

A) December 22	B) December 25
C) December 21	D) December 24

Answer & Explanation Answer: B) December 25

Explanation:

The Good Governance Day (GGD) is observed every year in India on the eve of the birth anniversary of former Prime Minister Atal Bihari Vajpayee.

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Filed Under: General Awareness
Exam Prep: GATE
Job Role: Analyst

Q:

Which is the first country in the world to use drones for national mail service?

A) Russia	B) France
C) Sweden	D) China

Answer & Explanation Answer: B) France

Explanation:

France became the first country in the world to use drones for national mail service.

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Filed Under: General Awareness
Exam Prep: Bank Exams
Job Role: Bank Clerk

Q:

Each boy contribute rupees equal to the number of girls and each girl contribute rupees equal to the number of boys in a class of 60 students. If the total contribution collected is Rs.1600,how many girls are there in the class ?

A) 30	B) 25
C) 15	D) 40

Answer & Explanation Answer: D) 40

Explanation:

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Filed Under: Data Sufficiency
Exam Prep: CAT

Q:

At what time, in minutes, between 3 o'clock and 4 o'clock, both the needles will coincide each other?

A. $5 \frac{1}{11}$

B. $15 \frac{4}{15}$

C. $16 \frac{4}{11}$

D. $4 \frac{4}{15}$

A) Option A	B) Option B
C) Option C	D) Option D

Answer & Explanation Answer: C) Option C

Explanation:

At 3 o'clock, the minute hand is 15 min. spaces apart from the hour hand.

To be coincident, it must gain 15 min. spaces.

55 min. are gained in 60 min.

Then 15 min spaces are gained in = $\frac{60}{55} \times 15$ min.

Therefore, The hands are coincident at $16 \frac{4}{11}$ min. past 3 o'clock.

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Filed Under: Clocks
Exam Prep: Bank Exams
Job Role: Bank Clerk

Q:

There is an empty reservoir whose capacity is 30 litres. There is an inlet pipe which fills at 5 L/min and there is an outlet pipe which empties at 4 L/min. Both the pipes function alternately for 1 minute. Assuming that the inlet pipe is the first one to function, how much time will it take for the reservoir to be filled up to its capacity?

A) 49.5 min	B) 50 min
C) 51 min	D) 52 min

Answer & Explanation Answer: C) 51 min

Explanation:

The work to be done = Capacity of reservoir = 30 litres.

1^st Minute ---> inlet pipe opened ---> 5 lit filled

2^nd minute ---> inlet pipe closed; outlet pipe opened ---> 4 lit emptied

In 2 minutes (5 litres - 4 litres = 1lit) is filled into the reservoir.

It takes 2 minutes to fill 1lit ---> it takes 50 minutes to fill 25 litres into the reservoir.

In the 51^st minute inlet pipe is opened and the reservoir is filled.

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Filed Under: Pipes and Cistern
Exam Prep: CAT
Job Role: Bank PO

Q:

Four ladies A, B, C and D and four gentlemen E, F, G and H are sitting in a circle round a table facing each other.

Directions:

(1) No two ladies or two gentlemen are sitting side by side.

(2) C, who is sitting between G and E is facing D.

(3) F is between D and A and is facing G.

(4) H is to the right of B.

Question:

1. Who are immediate neighbours of B?

2. E is facing whom?

A) G & H , H	B) F & H , B
C) E & F , F	D) E & H , G

Answer & Explanation Answer: A) G & H , H

Explanation:

From the directions given :

f11482726547.png image

From the fig. it is clear that

1) neighbours of B are G , H.

2) E is facing H.

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Filed Under: Permutations and Combinations
Exam Prep: CAT
Job Role: Bank PO

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