DAY 304:

The Main Challenge

One to test your basic adding skills.  What is the total of all twenty-two separate digits when listing all whole numbers from 10-20 inclusive?

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 6th & 7th rows contain the following fourteen numbers:

4   5   11   12   18   20   24   27   30   33   49   56   70   77

What is the difference between the two square numbers?

The Factors Challenge

Which THREE of the following numbers are factors of 304?

4     6     8     10     12     14     16

The Mathematically Possible Challenge

Using 38 and 10 once each, with + – × ÷ available, which are the only THREE numbers it is possible to make from the list below?

11    22    33    44    55    66    77    88    99    110

#11TimesTable

The Target Challenge

Can you arrive at 304 by inserting 1, 2, 3, 4 and 5 into the gaps below?

  •  ◯⁵+◯⁴+◯³–double◯–◯ = 304

Answers can be found here.

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