The Main Challenge
Only one of the following 2-digit even numbers can be divided exactly by 6. Which one?
26 34 38 44 46 50 56 62 64 74 78 86 98
The 7puzzle Challenge
The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from 2 up to 84.
The 3rd & 6th columns contain the following fourteen numbers:
4 7 12 15 17 30 35 36 40 49 54 64 80 81
What is the difference between the highest and lowest multiples of 6?
The Factors Challenge
Which of the following numbers are factors of 326?
4 6 8 12 14 16 None of them
The Mathematically Possible Challenge
Using 5, 6 and 12 once each, with + – × ÷ available, which are the only THREE numbers it is possible to make from the list below?
9 18 27 36 45 54 63 72 81 90
#9TimesTable
The Target Challenge
Can you arrive at 326 by inserting 1, 2, 3, 4 and 5 into the gaps below?
- (◯+◯)³+(◯³×◯²)–◯² = 326
