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Amazon Placement Questions & Answers :: Amazon

27.41K

Tot. Mock Test: 0


Total Qs: 7+

NA
SHSTTON
499
Solv. Corr.
331
Solv. In. Corr.
830
Attempted
0 M:57 S
Avg. Time

1 / 7

Choose the correct option.

A' and 'B' complete a work togather in 8 days.If 'A' alone can do it in 12 days.Then how many day 'B' will take to complete the work?


A25 days

B24 days

C20 days

DNone of these

Answer: Option B

Explanation:

A & B one day work = 1/8
A alone one day work = 1/12
B alone one day work = (1/8 - 1/12) = ( 3/24 - 2/24)
=> B one day work = 1/24
so B can complete the work in 24 days.

ShortCut By :: Aradhya

 A = 12, A+B = 8, B = ?

Take LCM of A & A+B = 24.

So, A=12*2 = 24, A+B = 8*3 = 24, B = 1*24 = 24.

Answer: B = 24days.

Submit Your Solution

NA
SHSTTON
541
Solv. Corr.
536
Solv. In. Corr.
1077
Attempted
1 M:15 S
Avg. Time

2 / 7

Choose the correct option.

If A alone can do a piece of work in 8 days and B alone can do the same work in 12 days. How many days A and B required to finish the same work if they work togather?


A24/5 days

B24 days

C5day days

D5/24 days

ENone of these

Answer: Option A

Explanation:

A alone one day work = 1/8
B alone one day work = 1/12
Both A and B one day work = (1/8 + 1/12) = (3/24 + 2/24)
= 5/24
so A and B together finish the work in 24/5 day
or 4 4/5 days.

Submit Your Solution

NA
SHSTTON
268
Solv. Corr.
324
Solv. In. Corr.
592
Attempted
0 M:41 S
Avg. Time

3 / 7

Choose the correct option.

When a number is divided by 13, the remainder is 11. When the same number is divided by 17, then remainder is 9. What is the number ?


A339

B349

C369

DData inadequate

Answer: Option B

Explanation:

x = 13p + 11 and x = 17q + 9

ShortCut By :: K

349-9=340 is divisible by 7

349-11=338 is divisible by 13

So, answer is 349

Submit Your Solution

NA
SHSTTON
186
Solv. Corr.
164
Solv. In. Corr.
350
Attempted
0 M:39 S
Avg. Time

4 / 7

Choose the correct option.

A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?


A120 metres

B180 metres

C324 metres

D150 metres

Answer: Option D

Explanation:

Length of the train = (Speed x Time) =50/3 x 9 m = 150 m.

Submit Your Solution

NA
SHSTTON
588
Solv. Corr.
193
Solv. In. Corr.
781
Attempted
0 M:20 S
Avg. Time

5 / 7

Choose the correct option.

A can do a work in 10 days and B can do the same work in 15 days. So how many days they will take to finish the same work ?


A5 days

B7 days

C9 days

D6 days

Answer: Option D

Explanation:

First find the 1 day work of both (A & B)
A 1 day's work = 1/10
and
B 1 day's work = 1/15

So (A + B) 1 day's work = (1/10+1/15)
= (3/30+2/30) = 5/30 = 1/6

So Both (A & B) together can finish work in 6 days

Submit Your Solution

NA
SHSTTON
311
Solv. Corr.
100
Solv. In. Corr.
411
Attempted
0 M:43 S
Avg. Time

6 / 7

Look at this series: 36, 34, 30, 28, 24, ... What number should come next?


A20

B22

C23

D26

Answer: Option B

Explanation:

Here is no explanation for this answer

ShortCut By :: Akhil

For the first two numbers there is a difference of 2 and next two nos have difference of 4 and 2 and 4 repeat the procedure

Submit Your Solution

NA
SHSTTON
335
Solv. Corr.
455
Solv. In. Corr.
790
Attempted
1 M:0 S
Avg. Time

7 / 7

Choose the correct option.

A can finish a piece work in 18 days and B can do the same work in half the time taken by A. So if they working together, what part of the same work can finished in a day?


A1/7

B1/6

C6

D5/6

Answer: Option B

Explanation:

First find the 1 day work of both (A & B)
A's 1 day's work = 1/18
and
B's 1 day's work = 1/9 (B can do work in half time)
(A + B)'s 1 day's work = (1/18+1/9)
= (1+2)/18 = 3/18 = 1/6
so A & B together can do 1/6 of work in 1 day.

Submit Your Solution


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