Questions

"My Life, My Mission" is the autobiography of Baba Ramdev.

Whereas

Ace Against Odds is the autobiography of Sania Mirza

Test of My Life: From Cricket to Cancer is the autobiography of Yuvraj Singh

Wings of Fire is the autobiography of Abdul Kalam.

Let the required number be 'X'

Condition 1 :  

$$\begin{gathered} XX = 2X \\ => 2X2 = X \\ => X = 12 \end{gathered}$$

Condition 2 :

$$\begin{gathered} X × X = X2 \\ => X = 12 \end{gathered}$$

Therefore, 12 is the number which becomes double when it is divided by itself and becomes half when it is multiplied by itself.

Looking at the diagram in  rows, the central circle equals half the sum of the numbers in the other circles to the left and right of the centre.

Saraswat Bank, the largest lender in the co-operative space, has appointed Smita Sandhane as its Managing Director (MD). She is the first woman chief of India's largest urban co-operative bank.
'Service to the common man' is the Motto of Saraswat Bank.

L.C.M. of 252, 308 and 198 = 2772.

So, A, B and C will again meet at the starting point in 2772 sec. i.e., 46 min. 12 sec.