CA Placement Paper 3

CA Placement Paper :-

1. 5, 5, 13, 13, 21, 21, __
                                                     
Ans :  29
                         
2. 0, 7, 26, 63, 124, __
                                                     
Ans :  215 ( hint: n3-1 )
                         
3. 1, 3, 5, 7, __

Ans :  9

4. xy - x + 2y = 6 equation is shifted to form equation xy=c what is c ?
                                                     
5.When x is real what is the least value of (x2-6x+5)/(x2+2x+1)

6. What is Eulers formula?
                                                     
Ans :  F+V-E =2; where F => faces; V => vertices; E => number of edges

7. Swap two variables without using temporary variable
                                                     
Ans :  a= a+b; b= a-b; a= a-b:

8.When an object like cube or sphere is seen along x, y, z axis we get the same.Apart from these suggest another object which has similar characteristics as that mentioned above?
                                                     
Ans :  Triangular prism

9. In a soap company a soap is manufactured with 11 parts. For making one soap you will get 1 part as scrap. At the end of the day u have 251 such scraps. From that how many soaps can be manufactured?

Ans: 25.

10. Every day a cyclist meets a train at a particular crossing. The road is straight before the crossing and both are traveling in the same direction. The cyclist travels with a speed of 10 Kmph. One day the cyclist comes late by 25 min. and meets the train 5km before the crossing. What is the speed of the train?

Ans: 60 kmph