NinetyninePairwise interactions within a group (calls, replies, relationships)
CAT has tested this idea 14 times across 3 papers, from 2021 to 2025. Solve one, and the others are the same method with different numbers or wording, which is why repeated concepts are the most efficient thing to practise.
| Question | What it asks | Answer |
|---|---|---|
| CAT 2025 Slot 3 · DILR Q1 | Call minutes among six friends grouped by operator | 50 |
| CAT 2025 Slot 3 · DILR Q2 | Call minutes among six friends grouped by operator | 525 |
| CAT 2025 Slot 3 · DILR Q3 | Call minutes among six friends grouped by operator | 350 |
| CAT 2025 Slot 3 · DILR Q4 | Call minutes among six friends grouped by operator | C |
| CAT 2025 Slot 1 · DILR Q19 | Five people answer each other's questions with taps | 7 |
| CAT 2025 Slot 1 · DILR Q20 | Five people answer each other's questions with taps | A |
| CAT 2025 Slot 1 · DILR Q21 | Five people answer each other's questions with taps | D |
| CAT 2025 Slot 1 · DILR Q22 | Five people answer each other's questions with taps | 6 |
| CAT 2021 Slot 1 · DILR Q5 | Seven people: friends, acquaintances, strangers counts | B |
| CAT 2021 Slot 1 · DILR Q6 | Seven people: friends, acquaintances, strangers counts | D |
| CAT 2021 Slot 1 · DILR Q7 | Seven people: friends, acquaintances, strangers counts | A |
| CAT 2021 Slot 1 · DILR Q8 | Seven people: friends, acquaintances, strangers counts | C |
| CAT 2021 Slot 1 · DILR Q9 | Seven people: friends, acquaintances, strangers counts | 3 |
| CAT 2021 Slot 1 · DILR Q10 | Seven people: friends, acquaintances, strangers counts | 4 |
Part of Grids & Matrices (67 questions since 2017).