MathsEquation

If x purchased an item at a discount of 10% and sold it to y at 10% profit. the marked price and the price for which Y purchased the item are in the ratio. (A) 1:1 (B) 10:99 (C) 20:99 (D) 100:99

Find the nth term of the following sequence 5+55+555+......Tn 1. 5(10^n -1) 2. 5^n(10^n -1) 3. 5/9(10^n -1) 4. (5/9)^n(10^n -1)

If universal set U={1,2,3,4,5,6,7,8} and A={1,2,3,4} then A'=?

If 12 men or 24 boys can do a work in 66 days , the number of days in which 15 men and 6 boys can do it (a) 44 (b)33 (c) 55 (d)66

If Sin(a+18)=cos 60 (0<a,90) , the value of cos5a, where angles are in degree. (a) 1/2 (b) 0 (c)1/root2 (d) 1

If a pole of 12 m high casts a shadow of 4root3 m long on ground , then sun's angle of elevation at that instant is 30 , 60 ,45 or 90 deg

if x:y be the ratio of two whole numbers and z be their hcf then the lcm of those two numbers is (a) yz (b) xz /y (c) xy /z (d) xyz

The digit in unit's place of the product 49237*3995*738*83*9 is (a) 0 (b) 7 (c) 5 (d) 6

The inradius of an equilateral triangle is root 3 cm then the perimeter of that triangle is (a) 18cm (b) 15cm (c) 12 cm (d)6 cm

If diagonal of rhombus are 24cm and 32cm then the perimeter of that rhombus is (a) 80cm (b) 84 cm (c) 76 cm (d) 72cm