Cryptograms are encoded sentences where each letter has been substituted for another. A letter may not stand for itself. Can you decode this cryptogram?

## #39 Double Twelve Dominoes

Some double twelve dominoes are shown in the phot below. How many dominoes are there in a full double twelve set? How many dots do they have in total?

Photo from another sergio on flickr.

## #38 Shade Six

Shade 6 circles on the diagram below, so that each row, column and diagonal has an even number of blank circles.

## #37 Maths Textbook

Rachel accidentally tore some consecutive pages out of her Maths textbook. Rachel discovered that the sum of the page numbers was 261.

How many pages and what were the page numbers on the pages Rachel tore out of her book?

## #36 Five Cards

Zoe had these five numbered cards:

How many five-digit numbers can she make that are divisible by 9 without having a remainder?

## #35 Counters

A total of 16 counters are put into four piles so that each pile has a different number of counters. List all possible arrangements of the counters. Write, and solve, a further question for investigation similar to this.