At last, around four in the afternoon, the poet (or the editor) arrived. He was a tall man, very English, very serious and of course very unknown to all of us. Battling with half a dozen pedestal fans on the shooting stage, The Boss read out a long speech. It was obvious that he too knew precious little about the poet (or the editor). The speech was all in the most general terms but here and there it was peppered with words like 'freedom' and 'democracy'. Then the poet spoke. He couldn't have addressed a more dazed and silent audience — no one knew what he was talking about and his accent defeated any attempt to understand what he was saying.
(Poets and Pancakes)
Two batteries of emf's \(3V \& 6V\) and internal resistances 0.2 Ω \(\&\) 0.4 Ω are connected in parallel. This combination is connected to a 4 Ω resistor. Find:
(i) the equivalent emf of the combination
(ii) the equivalent internal resistance of the combination
(iii) the current drawn from the combination
Four students of class XII are given a problem to solve independently. Their respective chances of solving the problem are: \[ \frac{1}{2},\quad \frac{1}{3},\quad \frac{2}{3},\quad \frac{1}{5} \] Find the probability that at most one of them will solve the problem.