In English, number 4 (four) is the only number containing the same number of letters as itself when spelt.
If you multiply numbers containing only 1s, you always get answers that are palindromic numbers (numbers that read the same in both directions).
11 × 11 = 121
111 × 111 = 12321
1111 × 1111 = 1234321
It is actually possible to divide a cake into 8 equal pieces with only 3 cuts.
Can you figure out how?
Day: 24 hours
Hour: 60 minutes
Minute: 60 seconds
Second: 1000 milliseconds
French people love cheese so much that pie charts are often referred to as 'camembert'.
The word integer is another way of saying whole numbers.
1, 254, -7 are examples of integers.
Number 18 is the only two-digit number that is twice the sum of its digits.
PAYE (pay as you earn) schemes are used in many countries to deduct employees' tax contribution (and other governmental taxes like medical cover etc...) directly from their salary.
Countries not using such schemes require people to retain parts of their salary themselves so they can later pay their income taxes (or else) when requested.
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