DAY 317

Today’s Challenge

Here is a number puzzle similar in concept to my latest FlagMath card game. Many schools are now playing the various editions, so here’s a taster:

Each of the eight letters, A-H, in the two sections contain a calculation with an answer in the 20’s:

  • Section 1

B:84÷4   G:296   C:3515   D:14+10   A:5×5   H:72÷3   E:7×4   F:16+11

  • Section 2

H:15+12   B:348   F:9×3   E:48÷2   C:11×2   G:60÷3   A:17+12   D:4015

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 containing 49 different numbers, ranging from 2 up to 84.

The 1st & 2nd columns of the playing board contain the following fourteen numbers:

2     10     13     16     21     22     27     33     45     48     55     56     60     70

How many numbers become prime numbers when 10 is added to them?



. . . can be found when clicking this.



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