12th Started#!#Voids

Class 12th Start Date

In a solid, oxide ions are arrnged in ccp, cations A occupy A occupy (1/8)^th of the tetrahedral voids and cation B occupy (1/4)^(th) of the octahedral voids. The formula of the compound is:

If in a GP, 5th term and the 12th term are 9 and (1)/(243) respectively, find the 9th term of GP.

Who is the Chairman of the 12th Finance Commission ?

In a row ot girls, Veena is 12th from the start and 19th from the end. In another row of girls. Sunita is 14th from the start and 20th from the end. How many girls are there in both the rows together ?