Answer / guest

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.

A sheet of paper has statements numbered from 1 to 45. For all values of n from 1 to 45, statement n says "At most n of te statements on this sheet are false". Which statments are true and which are false? A. The odd numbered statements are true and the even numbered are false. B. The even numbered statements are true and the odd numbered are false. C. All statements are true.

3 Answers   TCS,

---

You have 3 points labelled A, B and C. You then have another 3 points labelled 1, 2 and 3. The aim of the puzzle is to connect point A with point 1, 2 and 3. Point B with point 1, 2 and 3 and point C with point 1, 2 and 3. Now while connecting the points you have to follow one rule - the lines cannot cross over each other.

2 Answers  

---

At a recent painting competition,Jonny's rendition of a constable was not last.priya only just managed to avoid last place and came third.the lady who paintd a monkey was very successfull and took first place>Mary beat the lady who painted the lady the temple and the lady who painted the flower beat saching.can you determine who painted what and who won

2 Answers   QA,

---

13.333*19.111=?

11 Answers   TCS,

---

There is a safe with a 5 digit number as the key. The 4th digit is 4 greater than the second digit, while the 3rd digit is 3 less than the 2nd digit. The 1st digit is thrice the last digit. There are 3 pairs whose sum is 11. Find the number.

2 Answers  

---

---

There are four groups of Mangoes, Apples and Bananas as follows: Group I : 1 Mango, 1 Apples and 1 Banana Group II : 1 Mango, 5 Apples and 7 Bananas Group III : 1 Mango, 7 Apples and 10 Bananas Group IV : 9 Mango, 23 Apples and 30 Bananas Group II costs Rs 300 and Group III costs Rs 390. Can you tell how much does Group I and Group IV cost?

1 Answers  

---

Arrange five planets such that 4 of them add up to 5th planet numerically. Each of the letters of the planet should represent a unique number from the range 0 - 9. You have to use all ten digits. There is an amazing mathematical relationship exists among the names of the planet.

2 Answers  

---

Ek nadi ka Name Ek Ladki ka Name Ek PHOOL ka Name 3 sawalon ka jawab ek hi hona chahiye wo bhi Ek film ka Name hai...........

46 Answers   Ansor, Eagle, FGG, Ganga, Godavari, Infosys, JPSC Jharkhand Public Service Commission, Nilkamal, Parimal, Shani, Sola, SSC, Ugar,

---

A polygon has 1325 diagonals. How many vertices does it have?

1 Answers   Samsung,

---

Gomzi has 3 timepieces in his house - a wall clock, an alarm clock and a wristwatch. The wristwatch is always accurate, whereas the wall clock gains 2 minutes everyday and the alarm clock loses 2 minutes everyday. At exactly midnight last night, all three watches were showing the same time. If today is 25 July 2003, then on which date all three clocks will show the same time again?

4 Answers  

---

In a kingdom far far away, the King decided that the time has come to find a husband for his princess daughter. The King wanted to find a worthy lad for his princess, so he promised to give his daughter away to the first young (or old) man who would solve the puzzle that has stumped the best of his court mathematicians for years. The puzzle is very simple: in a palace, there are 25 rooms arranged in a square--5 rows of rooms with 5 rooms in each row. In every room there is a light switch which not only switches on/off the light in that room, but also switches the lights in the adjacent rooms--the room to the right, to the left, the room above and the room below. Initially, all of the lights are turned off. The goal is to turn the lights on in every room of the palace.

22 Answers   Adobe,

---

X is a five letter word.X is a talent in u.if u remove 1st letter X is dead. if u remove 1st 2 letters x is sick.what is X?

11 Answers  

---