5     (a) 2.80   (b) 12.80   (c) 20.08 (approx.)   (d) 21.80 (approx.)

2.5(a) 8.10 (b) 8.51 (approx.) (c) 18.05 (d) 80.50 (approx.)

The arithmetic mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31. The mean score of remaining 55% is (a) 4550quad (c) 51.4 approx.(d)54.6 approx.

What would be the simple interest obtained on an amount of Rs5760 at the rate of 6p.c.p.a. after 3 years? (a) Rs 1036.80 (b) 1063.80 (c) 1336.80 (d) 1666.80

Ram borrows Rs 520 from Gaurav at a simple interest of 13% per annum.What amount of money should Ram pay to Gaurav after 6 months to be absolved of the debt? (a) Rs 353.80 (b) 453.80 (c) 552.80 (d) 553.80

(20.25xx 2.80)/(28.35)

Which of the following vulgar fractions, when written as a decimal, will not terminate? Options are (a) (80)/(150) (b) (81)/(150) (c) (15)/(48) (d) (21)/(600) .

(80)^2-(65)^2+81=? 306 (b) 2094 (c) 2175 (d) 2256 None of these

cos20 ^ (@) cos40 ^ (@) cos80 ^ (@) =

(7.5xx7.5+37.5+2.5xx2.5) is equal to (a) 30 (b) 60 (c) 80 (d) 100

The successor of -79 is -80 (b) -78 (c) 80 (d) 78