This is a Graphs and Tables question that looks intimidating because of the network diagram, but the underlying math is just repeated division by 3. The whole question reduces to: find your anchor node, trace the chain, count the hops.
The rule: every arrow points from a primary node (higher value) to a secondary node (lower value), and secondary = primary ÷ 3.
Step 1 — Anchor at A and trace the main horizontal chain.
A = 243 is given. Following the arrows across the middle row:
A(243) → B(81) → C(27) → D(9) → E(3) → F(1) → G(1/3) → H(1/9)
This is a geometric sequence with ratio 1/3. After 7 steps: H = 243 × (1/3)^7 = 1/9.
Step 2 — Find the value of node J.
Node A connects downward to node I (leftmost node of the row below). From there the chain continues:
A(243) → I(81) → J(27)
J = 243 ÷ 3^2 = 27.
Dropdown 2: J = 27 ✓
Step 3 — Find the minimum across ALL nodes A through T.
Tracing every branch:
- Middle row (A–H): minimum is H = 1/9
- Top row fed from F: F(1) → Q(1/3) → R(1/9) → S(1/27) → T(1/81)... but wait — Q is primary to F in the diagram, meaning Q = 3 and the top row runs T(81) → S(27) → R(9) → Q(3). Minimum in top row = Q = 3.
- Bottom rows: values stay above 1/9
The smallest value across all four rows is 1/9, sitting at node H.
Dropdown 1: Lowest value = 1/9 ✓
The common trap: students misread arrow directions and calculate values going the wrong way — then get answers like 81 or 3 instead of fractions for the minimum, or they invert the chain and get J = 3 instead of 27. Always confirm: the arrowhead marks the SECONDARY (smaller) node. If a value is getting bigger as you follow arrows, you've flipped the direction.
Takeaway: In Graphs and Tables network questions with a multiplicative rule, convert the visual into a sequence immediately — find your anchor, count hops, apply the ratio. The diagram complexity is the distraction; the math is just exponents.