Ques:- There are 9 balls of equal size and same weight(they look similar) except 1. How many weights required to find the dissimilar ball using a weighing balance?
Recent Answer : Added by G Dinesh On 2023-06-10 18:20:22:
Here is the solution to the given version of the puzzle (9 balls, one is heavier, need to identify oddball), where we label the balls A, B, …, I:
1. Weigh ABC versus DEF.
Scenario a: If these (1) balance, then we know the oddball is one of G, H, I.
2. Weigh G versus H.
Scenario a.i: If these (2) balance, the oddball is I.
Scenario a.ii: If these (2) do not balance, the heavier one is the oddball.
Scenario b: If these (1) do not balance, then the oddball is on the heavier side. For simplicity, assume the ABC side is heavier, so the oddball is one of A, B, C.
2. Weigh A versus B.
Scenario b.i: If these (2) balance, the oddball is C.
Scenario b.ii: If these (2) do not balance, the heavier one is the oddball.
answer is maximum of 2.
Ques:- If an item costs Rs.3 in '99 and Rs.203 in '00.What is the % increase in price?
Ques:- Two numbers are in the ratio of 5:7. If 25 be subtracted from each, they are in the ratio of 35:59. Find the numbers?
Recent Answer : Added by Tirth Shah On 2022-03-09 16:29:54:
x/y =5/7…………………………..(1)
(x-25)/(y-25)=35/39
59x=35y+600
dividing b.t.s by y and substituting (x/y) value from equation (1)
y=84
Now, substitue y value in equation (1)
x = 60
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Recent Answer : Added by saikiran On 2022-08-24 17:03:44:
9654
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Ques:- In a certain code language DOWNBEAT is written as TABEWNDO. How will the word PROSPECT be written in that code language?
A. RPSOEPTC
B. TCPEOSPR
C. ORPSPTCE
D. TCPREPOS
E. None of these
Recent Answer : Added by priya On 2021-08-05 17:11:34:
option B
TCPEOSPR
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Recent Answer : Added by Maha On 2022-08-14 16:32:29:
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Ques:- Ravi can do a piece of work in 30 days while Prakash can do it in 40 days. In how many days will they finish it together?
Recent Answer : Added by SHUBHAM PATIDAR On 2021-10-07 15:41:16:
Ravi do a work in 30 days
Prakash do a work in 40days
then both work together 1/30+1/40=70/1200
then solve values 120/7 is 17(1/7) days
Ques:- There is six letter word VGANDA . How many ways you can arrange the letters in the word in such a way that both the A's are together?
Recent Answer : Added by Dnyaneshwar On 2022-03-09 16:40:37:
5! = 120
Ques:- How long does a train 110 m long running at the speed of 72 km/hr takes to cross a bridge 132 m length?
Recent Answer : Added by AP On 2023-03-15 12:25:11:
Total distance to cover = 132 +110 = 242m
Speed = 72kn/hr = 20m/s
time = 242/20 = 12.1 sec.
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Ques:- A,B and C needs 8, 12 and 16 days respectively to finish a task. How many days will it take if A works for 2 days then B works on it until 25% of the job is left for C to do, and C completes the work?
Recent Answer : Added by Deven Sharma On 2023-05-31 18:36:37:
To solve this problem, we can break it down into steps:
Step 1: Determine the individual rates of work for A, B, and C.
If A needs 8 days to finish the task, then their work rate is 1/8 of the task per day.
If B needs 12 days to finish the task, then their work rate is 1/12 of the task per day.
If C needs 16 days to finish the task, then their work rate is 1/16 of the task per day.
Step 2: Calculate the combined work rate of A and B.
If A works for 2 days, their contribution will be 2 * (1/8) = 1/4 of the task completed.
If B works until 25% of the job is left for C, then they will complete 75% of the task.
Step 3: Calculate the time it takes for B to complete 75% of the task.
Since B’s work rate is 1/12 of the task per day, it will take B (75%)/(1/12) = 9 days to complete 75% of the task.
Step 4: Calculate the remaining work for C.
If B completes 75% of the task, then the remaining work for C is 100% – 75% = 25% of the task.
Step 5: Calculate the time it takes for C to complete the remaining work.
Since C’s work rate is 1/16 of the task per day, it will take C (25%)/(1/16) = 4 days to complete the remaining 25% of the task.
Step 6: Calculate the total time required.
A worked for 2 days, B worked for 9 days, and C worked for 4 days, totaling 2 + 9 + 4 = 15 days.
Therefore, it will take a total of 15 days for A to work for 2 days, B to work until 25% of the job is left, and C to complete the remaining work.
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Recent Answer : Added by Admin On 2020-05-17 12:03:14:
1920
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Recent Answer : Added by arjun On 2021-12-09 18:40:00:
167
Ques:- Find the least number of complete years in which a sum of money put out at 25% compound interest will be more than double of itself?
Recent Answer : Added by Rajarshi Gangopadhyay On 2021-12-13 17:58:43:
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Here is the solution to the given version of the puzzle (9 balls, one is heavier, need to identify oddball), where we label the balls A, B, …, I:
1. Weigh ABC versus DEF.
Scenario a: If these (1) balance, then we know the oddball is one of G, H, I.
2. Weigh G versus H.
Scenario a.i: If these (2) balance, the oddball is I.
Scenario a.ii: If these (2) do not balance, the heavier one is the oddball.
Scenario b: If these (1) do not balance, then the oddball is on the heavier side. For simplicity, assume the ABC side is heavier, so the oddball is one of A, B, C.
2. Weigh A versus B.
Scenario b.i: If these (2) balance, the oddball is C.
Scenario b.ii: If these (2) do not balance, the heavier one is the oddball.
answer is maximum of 2.