The exercises
Number Series
Look at the series, find the rule and pick the number that comes next.
Trains: spotting rules and patterns
Play freeFruit Equations
Each fruit stands for a number. Use the equations to work out the value of the fruit asked for.
Trains: reasoning and deduction
Play freeIt adapts to your level
Every exercise has dozens of levels. Albind starts at a difficulty that suits your age and level, then updates it after every round: it goes up when you do well and down when you struggle. At first it moves in big steps, then in small ones, so you settle at your best and keep improving.
Tips
- In sequences, look at the difference between one number and the next: the rule is often there.
- If the difference changes, check whether it grows by the same amount each time or whether two rules alternate.
- In fruit puzzles, start from the equation with only one unknown fruit.
Frequently asked questions
What kinds of sequences are there?
Constant additions and subtractions, doubling, alternating rules, squares, Fibonacci-style and interleaved sequences. New ones unlock as you level up.
Do I need to be good at maths?
No. The four basic operations are enough: the rest is reasoning.
What if I get it wrong?
No problem: when you miss, Albind shows you the right answer so you learn the rule.
Try it now, it’s free
No sign-up: just open it and start. Your progress is saved on your device.
Play free