`((489+375)^2-\ (489-375)^2=?)/((489xx375))` 144 (b) 864 (c) 2 (d) 4 (e) None of these

1888-:32-:8=?( a) 7.375 (b) 9.485 (c) 29.5 (d) 472 (e) None of these

786-:24xx?=6.55(a)0.2(b)0.4(c)4(d)5(e) None of these

(18xx14-6xx8)/(488-:4-20)=?(1)/(2)(b)(3)/(4)(c)2(d)4(e) None of these

If the order of the digits in each of the following numbers is reversed and then newly formed numbers are arranged in ascending order, what will be the middle digit of the fourth number from top ? 845 632 489 398 817 546 279 638 1) 1 2) 3 3) 4 4) 8 5) None of these

0.3+3+3.33+3.3+3.03+333=?(a)345.99(b)355.96(c)375.66(d)375.93(e) None of these

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

[(8(3.75)^(3)+1)/((7.5)^(2)-6.5)] is equal to: (9)/(5)(b)2.75 (c)

What is 28% of 36% of (5)/(7) the of 5000?360b .375 c.420d.480 e.none of these

cos^(2)(97.5^(@))-sin^(2)(37.5^(@)) is equal to-