© Andrei Udriște, 2025
(01.07.2025) News! NAIT Certamen Ingenii competition is officially underway.
For each item, identify and explain the commonality shared by the elements. Though vague or superficial answers may exist, your task is to find a precise underlying rule.
Example: unknown, illness, empress, abscond, offhand
Statements such as "All words have 7 letters" or "All words start with a vowel" are indeed true, but the similarity they describe is incidental.
Solution: All words follow the same pattern of vowel-consonant alternation: VCCCVCC.
Email your solutions to nsl36submission@gmail.com.
Authenticate yourself by means of a government ID. Your full name, country of origin, birth date and photo must be visible.
Each submission costs €12 (PayPal). (Price will increase by €2 with each new official norm report — at 20, 40, 80, and 120 testees.)
You may make any number of attempts; however, only the first two will be considered official.
Estimated norm:
| Raw score | I.Q. sd15 |
|---|---|
| 12 | 125 |
| 14 | 132 |
| 16 | 139 |
| 18 | 145 |
| 20 | 151 |
| 22 | 158 |
| 24 | 166 |
| 26 | 173 |
| 28 | ≥180 |