[omkumar]

21. The solution to x2 +6x+9 = 0 is ……..
(a) x1 = + 3, x2 = -3 (b) x1 = 3, x2 = 3
© x1 = -3, x2 = -3 (d) No solution


22. What is the chance of getting a 2 or 4 in rolling a die?
(a) 2/3 (b) 1/6 © 1/3 (d) ½


23. At what rate of simple interest per annum an amount will be doubled in 10years?
(a) 10% (b) 7.5% © 16% (d) 15%


24. Five times an unknown number is 5 less than 50. The unknown number
(a) 10 (b) 11 © 9 (d) 5


25. The acute angle between the hour hand and minute hand of a clock at 4 PM
(a) 900 (b) 1200 © 1500 (d) 2400


26. Water is filled in a cylindrical vessel in such a way that its volume doubles after every five minutes. If it takes 30 minutes for the vessel to be full, then the vessel will be one fourth full in
(a) 20 minute (b) 25 minutes
© 7 minutes 30 seconds (d) 10 minutes


27. If 10 cats can kill 10 rats in 10 minutes how long will it take 100 cats to kill 100 rats
(a) 1 minutes (b) 10 minute © 100 minutes (d) 10000 minutes


28. If 75 % of a number is added to 75, the result is the number itself, then the number is:
(a) 250 (b) 750 © 400 (d) 300


29. A school has enough food for 400 children for 12 days. How long will the food last if 80 more children join them?
(a) 6 days (b) 7 days © 10 days (d) 8 days


30. The sum of two consecutive numbers is 55, which is the largest number?
(a) 25 (b) 28 © 26 (d) 27