Add together the 7th prime number, the 7th square number, the 7th 2-digit number and the 7th whole number that contains a ’7′. What is your answer?
The 7puzzle Number 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 5th & 6th rows of the playing board contain the following fourteen numbers:
5 6 7 12 16 18 20 21 33 49 50 56 81 84
From the list:
What is the sum of the multiples of 5?
- What is the difference between the highest and lowest multiples of 7?
- Which four different numbers have a sum of 100?
. . . can be found when clicking this.