DAY 277:

Today’s Challenge

Each of the ten letters, A-J, in the two sections below contains a subtraction calculation:

  • Section 1

E:74   J:21   G:75   A:86   C:42   I:85   F:65   B:98   H:95   D:54

  • Section 2

I:43   A:63   H:31   B:76   F:52   J:96   E:97   G:73   D:64   C:87

Which is the only letter that has the SAME answer in BOTH sections?

The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging from up to 84.

The 3rd & 5th rows contain the following fourteen numbers:

6    7    13    16    21    25    36    42    45    50    66    80    81    84

What is the difference between the two multiples of 10?

Make 277 Challenge

Can you arrive at 277 by inserting 1, 2, 3, 4 and 5 into the gaps below?

(◯+◯)³+(◯–◯)³– = 277

Answers can be found here.

Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.

This entry was posted in Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *