AAI Placement Paper 2012

AAI Placement Paper  2012:-
1. 5,5,,13,13,21,21
Ans: 29
2. 0,7,26,63,124,
Ans: 215 i.e.n**3-1 rule following
3. 1,3,5,7,
Ans: 9 '1' is not a prime number
4. Arun’s average rate for a round trip  in 48 Km/hr. One way, he travels at 40 Km/hr. His speed on his return over the same route is :
1) 56 Km/hr,   2) 60 km/hr. 3) 48 Km/hr.  4) 58 Km/hr.
5. Convert 251 decimal to base 8(i.e. octal)?
Ans: similar question but for this question answer is 373
6. At what time are the bands of a clock together between 2 and 3 ?
1] 10 10/11 mins, past 2     2] 10 10/11 mins to 3
3]  9 1/11 mins. Past 2    4] 30 mins, past 2
7. A die is thrown twice what is the probability that you get same number
Ans:11/36.
8. In a class of 100 students, 48 students secured 40 marks in English, 32 secured 60 marks and the rest 80. Find the average in English for the whole class.
1] 60 2] 19.42 3] 62.66  4] 54.40
9. Rs. 3000 / 150 p = ?
1] Rs. 20 2] 2000 P  3] 2000   4] None of these
10. Simplify (x2 – 1)  (x2 – 4)  (x2 + x – 2)  (x2 – x – 2)
1] 0 2] 1    3] x+2    4] (x+2) / (x-1)