P, Q, R, S, T, V and W are sitting around a circle facing at the centre. V is second to the left of P and second to the right of W. T is third to the right of Q and is not an immediate neighbour of V. S is third to the right of R.In which of the following groups is the last person sitting between the first and the second persons?
The volume of two spheres are in the ratio 64 : 27. The difference of their surface areas, if the sum of their radii is 7 units, is _____.
A 28 π sq. units
B 88 sq. units
C 88π sq. units
D 4π sq. units
*88sq units = 28 pi sq units since 28*22/7 = 22*4 = 88 sq units .. the answer should be corrected , A > or B> is correct for this question