Brain Test 5 Level 17
Medium1m 12sBrain Test 5 Level 17 - Walkthrough & Answer
Brain Test 5 Level 17 is a three-part number-pattern level — fill in the repeating 1-2-3-4 cycle, identify the rotating digit group, and use the multiply-by-3 grid relationship to find the missing number.
Preview
Level 17
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Quick tactics for this level
Tip 01
For Part 1, write out the full repeating sequence 1234-1234-1234 and identify what positions the blanks fall on.
Tip 02
For Part 2, the last digit of each group becomes the first digit of the next. 4765 → 5476 → 6547 → 7654.
Tip 03
For Part 3, the top number is always 3x the bottom number. With 12 on top, the bottom must be 4.
Step-by-step solution
Part 1 — "Complete the pattern" (1234 1234 1 _ _ 4): the blanks fill positions 2 and 3 in the repeating cycle. Tap 2, then tap 3.
Part 2 — "Complete the pattern" (4765-5476-6547-_ _ _): each group rotates right by one digit. Next group is 7654. Tap 7, then 6, then 5.
Part 3 — "Complete the pattern" (grid): the top row is 3x the bottom row. The third column has 12 on top, so the bottom is 12 divided by 3 = 4. Tap 4.
All three patterns are complete. The level ends.
Common mistakes
Mistake 01
Filling Part 1 blanks with 3 and 2 instead of 2 and 3 — the order matters; the blanks are the second and third positions in the 1234 cycle.
Mistake 02
Applying a left-rotation instead of right-rotation in Part 2.
Board notes
Layout
Level 17 opens with a number-pattern puzzle on a plain white board. A sequence reads "1234 1234 1 __ 4" with two blank spaces and a digit pad (0-9) below. No characters or props are present — only numbers and blanks.
Goal
Three sequential pattern puzzles must be solved by identifying the rule and filling in the blanks. Part 1 is a repeating digit cycle, Part 2 is a rotating group, and Part 3 is a multiplication grid.
Opening
Part 1 — "1234 1234 1 _ _ 4" repeats the 1-2-3-4 cycle; blanks are 2 and 3. Part 2 — "4765-5476-6547-_ _ _" rotates each group right by one digit each step; next group is 7654, so blanks are 7, 6, 5. Part 3 — a grid where top row is 3x bottom row; missing bottom value for top=12 is 4 (12/3=4).
Danger Zone
In Part 1, counting positions carefully prevents off-by-one errors. In Part 2, the rotation direction is rightward (the last digit moves to the front). In Part 3, resist addition-based thinking — the relationship is multiplicative (×3), not additive.
Mechanics
Level 17 is the game's first fully abstract number-pattern level with no physical props or characters. All three parts require recognizing a mathematical rule and applying it to find the missing value.
Level 17 FAQ
What are the blanks in the number pattern "1234 1234 1 _ _ 4" in Brain Test 5 Level 17?
The blanks are 2 and 3. The sequence repeats the cycle 1-2-3-4, so after the "1" come "2" and "3" before the given "4."
What is the answer to the grid pattern in Brain Test 5 Level 17?
The top row is always 3 times the bottom row. The third column has 12 on top, so the missing bottom number is 12 divided by 3 = 4.