Ques:- A polygon has maximum 1325 diagonals. How many vertices does it have?
Recent Answer : Added by DK BOSS On 2021-07-15 08:05:23:
The formula to find number of diagonals (D) given total number of vertices or sides (N) is
N * (N – 3)
D = ———–
2
Using the formula, we get
1325 * 2 = N * (N – 3)
N2 – 3N – 2650 = 0
Solving the quadratic equation, we get N = 53 or -50
It is obvious that answer is 53 as number of vertices can not be negative.
Alternatively, you can derive the formula as triange has 0 diagonals, quadrangel has 2, pentagon has 5, hexagon has 9 and so on……
Hence the series is 0, 0, 0, 2, 5, 9, 14, …….. (as diagram with 1,2 or 3 vertices will have 0 diagonals).
Using the series one can arrive to the formula given above.
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Ques:- There are some rabbits and peacocks in a zoo. The total number of their heads is 60 and total number of their legs is 192. Find the number of total rabbits?
Recent Answer : Added by SAID OUJEAR On 2021-08-09 17:01:34:
24 peacocks and 36 rabbits
Ques:- A 50m wide river is flowing endlessly. Two boys are standing near the lakeside, wanting to cross the river. A boat is tied to a tree nearby. The boat is however weak and can carry only one person at a time. Both of them still manage to cross the river. How did they manage to do it?
Recent Answer : Added by kavin On 2021-07-17 10:05:48:
It is mentioned the the boat is tied with the rope to the tree. So first one will be crossing the river and the other with the help of the ropes tied to the tree will be able to pull the both back and then he will be crossing the river.
Ques:- Find the values of each of the alphabets.
N O O N
S O O N
+ M O O N
----------
J U N E
Recent Answer : Added by Admin On 2022-09-27 18:33:38:
4 1 1 4
5 1 1 4
+ 0 1 1 4
———-
9 3 4 2
Ques:- Give me an example of a time when you had to put your point across in a meeting to which most of the people were reluctant to hear.
Ques:- Eight persons – P, Q, R, S, T, U, V and W are sitting around a circular table. S is to the immediate right of W. V is not next to either R or T. W is to the immediate right of T, who is sitting opposite to R. U and W are sitting opposite to each other. If R and V interchange their places, then who is opposite T?
Ques:- M/N = 6/5 3M+2N = ?
Recent Answer : Added by Admin On 2020-05-17 11:59:21:
cannot be determined .
Ques:- 1027.05 ? 314.005 + 112.25 = ?
Recent Answer : Added by Admin On 2020-05-17 12:03:28:
sorry the above ans was typed by mistake the correct ans is…..
1027.05 ? 314.005 + 112.25 = ?
ans:
1027.05 – 314.005 + 112.25 = 825.295
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Ques:-  A, B, C are 3 girls and there are 770 Apples. For every 4 Apples, A takes, B takes 3. For ever 6 Apples, C takes 7 Apples?  Â
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Ques:- The two trains of lengths 400 m, 600 m respectively, running at same directions. The faster train can cross the slower train in 180 sec, the speed of the slower train is 48 km. then find the speed of the faster train?
Recent Answer : Added by Mohammad Hafijur Rahim On 2023-05-17 10:40:48:
slower train – 48 kmph = 40/3 m/s
say faster train, v m/s
therefore, {v-(40/3)}*180 = 600, => v= 60 kmph
Ques:- Kiran travels from A to B by car and returns from B to A by cycle in 7 hours. If he travels both ways by car he saves 3 hours. What is the time taken to cover both ways by cycle?
Recent Answer : Added by Admin On 2022-09-29 15:39:35:
x (A to B by car) + y (B to A by cycle) is 7 hours
x (A to B by car) + x (B to A by car) is 7 minus 3 is 4 hours
2x is 4 and hence x is 2
2 + y is 7 and hence y is 5
y (A to B by cycle) + y (B to A by cycle) is 5 + 5 is 10 hours
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Ques:- A train speeds past a pole in 15 sec and a platform 100 m long in 25 sec,find its length is?
Recent Answer : Added by Fatima On 2022-09-24 14:33:37:
It is assumed to be constant. Now, to cross past the pole, the train should cover a distance of x meters. Now, the time taken by the train to cross a platform of length 100 m is 25 seconds. Hence, the length of the train is 150 m.
Ques:- What made me to rejoin siemens? relocation?
Ques:- One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill tank in 36 min, then the slower pipe alone will be able to fill the tank in?
Recent Answer : Added by Thrinayani sanagapati On 2022-08-14 16:28:52:
1/x+1/3x=1/36
4/3x=1/36
36*4=3x
X=48
So the slower pipe alone fill the tank in 48 minutes.
Ques:- M men agree to purchase a gift for Rs. D. If three men drop out how much more will each have to contribute towards the purchase of the gift/A. D/(M-3)B. MD/3C. M/(D-3)D. 3D/(M2-3M)
Ques:- How do you keep track of things you need to do?
Ques:- Find out the wrong number in a given series.
2, 3, 6, 15, 52.5, 157.5, 630
A. 6
B. 15
C. 52.5
D. 157.5
Recent Answer : Added by mujahid ali On 2022-03-09 16:34:56:
52.5
Ques:- The perarl city express runs between chennai and _______
Ques:- Evaluate the area of square field whose side of length is 15 m?
Recent Answer : Added by Sheeba On 2022-08-14 16:42:04:
225
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Ques:- The average age 9 members of a committee are the same as it was 2 years ago, because an old number has been replaced by a younger number. Find how much younger is the new member than the old number?
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Ques:- Two pipes P and Q can fill a tank in 4 and 5 hours respectively. If they are turned up alternately for one hour each, the time taken to fill the tank is?
Recent Answer : Added by shadow of lo On 2022-03-09 16:33:24:
Pfull = 4 Hrs; Qfull = 5 Hrs
Assume velocity Vp = x then Vq = 4/5 x –> avg velocity = (5/5 + 4/5) / 2 = 0.9
If fastest time = 4hrs then the time it would take to fill up tank by alternating is 4/0.9 = 4.44 Hrs
The formula to find number of diagonals (D) given total number of vertices or sides (N) is
N * (N – 3)
D = ———–
2
Using the formula, we get
1325 * 2 = N * (N – 3)
N2 – 3N – 2650 = 0
Solving the quadratic equation, we get N = 53 or -50
It is obvious that answer is 53 as number of vertices can not be negative.
Alternatively, you can derive the formula as triange has 0 diagonals, quadrangel has 2, pentagon has 5, hexagon has 9 and so on……
Hence the series is 0, 0, 0, 2, 5, 9, 14, …….. (as diagram with 1,2 or 3 vertices will have 0 diagonals).
Using the series one can arrive to the formula given above.