Step 1: Probability of first roll.
The die has 6 equally likely outcomes. Probability of rolling a 1 = \(\tfrac{1}{6}\).
Step 2: Probability of second roll.
Independence: the second roll is not affected by the first. Probability of rolling a 4 = \(\tfrac{1}{6}\).
Step 3: Combine independent events.
The probability of both happening = \(\tfrac{1}{6}\times\tfrac{1}{6}=\tfrac{1}{36}\).
Final Answer:
\[
\boxed{\tfrac{1}{36}}
\]
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.
In the Wheatstone bridge shown below, the sensitivity of the bridge in terms of change in balancing voltage \( E \) for unit change in the resistance \( R \), in V/Ω, is __________ (round off to two decimal places).
