There is a school with 100 students and correspondingly 100 lockers, all of which start off closed. The first student opens every locker and the second students closes every other locker starting with the second (2,4,6...etc..) . The 3rd student changes the state of the lockers numbered (3,6,9.. etc.). The fourth student changes the state of the lockers numbered (4,8,12.. etc..).. This continues until all the 100 students passes along the lockers.. when all the 100 student is done which locker is closed and which locker is in open condition?

6 Answers   TCS, Zoho,

---

There are 5 red shoes, 4 green shoes. If one draw randomly a shoe what is the probability of getting red shoe

0 Answers   Ramco,

---

Given a collection of points P in the plane, a 1-set is a point in P that can be separated from the rest by a line; i.e. the point lies on one side of the line while the others lie on the other side. The number of 1-sets of P is denoted by n1(P). The maximum value of n1(P) over all configurations P of 19 points in the plane is.. plz give the explanation... plz

1 Answers   TCS,

---

Zulus always speak truth and Hutus always speak lies. There are three persons A,B&C. A met B and says " I am a Zulu or I am Hutu". We don't know what exactly he said. then B meets C and says to c that " A is a Zulu ". Then C replied " No, A is a Hutu ". How many Zulus are there ?

0 Answers   Cadence,

---

The sum of series 1+1(1+1/n)+3(1+1/n)2+…. Is equal to

1 Answers   eLitmus,

---

a laborer can dig a hole 8feet squatre and 8 feet deep in 8 days.how long will it take him ti dig a hole 4 feet square and 4 feet deep?

6 Answers   TCS,

---

new town is straight to the north of new york. A high way m runs from newtown making an angle of 61 degree south east. From new york there is also an high way n which runs northeast 61 degrees. If high ways m and n are straight then find out the acute angle made at their intersection point.

0 Answers   TCS,

---

epaulet : shoulder : : ring :?

0 Answers   Caterpillar, CTS,

---

A clock with the hours round the face in Roman block numbers, as illustrated in the sketch fell down and the dial broke into four parts....

0 Answers   Infosys,

---

Each row of letters or numbers has a rule connecting them. Write the next number or letterin the brackets. K , A , J , B , I , C , H , (_ _ _)

0 Answers   Accenture,

---

Find the next number in the series 12,21,,112,121,122---

0 Answers   DSQ Software,

---

Find the least value of 3x + 4y if x2y3 = 6.

0 Answers   iNautix,

---