Today’s Challenge
Here’s a number trail involving 16 arithmetical steps. Start with the number 2, then:
- +33
- divide by seven
- ×3
- add ten percent
- double this
- add three
- find the square root of this
- +7
- 1/2 of this
- add nineteen point five
- subtract two
- ÷6
- +15
- ×5
- –93
- ÷2
What is your final answer?
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 rows of the playing board contain the following fourteen numbers:
5 12 13 18 20 25 33 36 42 45 49 56 66 80
Which two numbers, when doubled, are also present on the list?
Make 135 Challenge
Can you arrive at 135 by inserting 4, 5, 9 and 12 into the gaps on each line?
- ◯²–◯×(◯–◯) = 135
- ◯×◯×◯÷◯ = 135
- (◯+◯)²+half(◯×◯) = 135
Answers can be found here.
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