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Directions (Q. 1 –5): In the following number series one number is wrong. Find out the wrong number.

1. 267, 263, 251, 230, 203, 167
251
263
203
230
165
Solution:

2. 135, 45, 18, 10, 6, 6
10
6
18
135
45
Solution:

3. 45, 48. 5, 55.5, 65, 80, 97.5
48.5
65
97.5
55.5
80
Solution:

4. 856, 452, 250, 149, 98, 73.25
98
149
856
73.25
50
Solution:

5. 739, 758, 720, 737, 705, 718, 688
739
720
688
705
718
Solution:

Directions (Q. 6-7): Study the information given below and answer the questions carefully:

Ramesh, Dinesh and Ganesh completed a job in 12 days. They worked together for 4 days in which they completed 44% of the total work. But due to unavoidable circumstances Ramesh quits the job at this point. Work done by Dinesh in 3 days is equal to the work done by Ganesh in 4 days. 6. Find the time taken by the fastest worker to complete the job.
21.875 days
23.475 days
18.245 days
17.465 days
None of these
Solution:

7. Find by what per cent the slowest worker is less efficient than the second fastest worker?
13.54%
12.5%
37.5%
44%
None of these
Solution:

8. A right angle triangle with height 5 cm and base 12 cm. This triangle is rotated once accordingly its heights. Find the curved surface area of the cone obtained?
146 Ï€
136 Ï€
156 Ï€
166 Ï€
None of these
Solution:

9. What value should come in the place of question mark (?) in the following question?

sqroot(729) + 5^2 = ? × 13
4
8
6
2
3
Solution:

10. 4 litres of wine are drawn from a cask containing 40 litres of wine and It is replaced by water. The process is repeated 5 times. Find out the ratio of wine to water finally. (Approximately)
3 : 2
2 : 3
4 : 5
5 : 6
None of these
Solution: