For the following questions answer them individually
If $$3x^2 - ax + 9 = ax^2 + 2x + 5$$ has only one (repeated) solution, then the positive integral solution of $$a$$ is
Proto-history is the period between ......... and the history for which we have a few written records.
According to .........., the properties of elements are a periodic function of their atomic masses.
Leela starts for work in the morning. Her office is 2 kms from home so she prefers to walk. She stalls walking in the opposite direction of the sun from home, walks for 500 m and then takes a right turn and walks for 200 m. Then again. she takes a left and walks towards her office. In which direction from her home is her office?
What was the theme of the $$26^{th}$$ World Book Fair held in New Delhi from 6-14 January 2018?
