[OK] Privacy Policy  -  Terms & Conditions  -  See DetailsWe use cookies to personalise content and ads. We also share information about your use of our site with our advertising partners who may combine it with other information you've provided to them or they've collected from your use of their services.
 Puzzle 1153 Which letters come next in this sequence: NE US RN ER RS ==?== [Ref: ZATA] Hint: Look to the skies. Answer: TH. The last two letters of the planets in reverse order from the sun. Puzzle 1154 How many squares, of any size, are on a board divided up into 6 squares by 6 squares? [Ref: ZTKI] Hint: Answer: 91 squares: there are 36 one by ones, 25 two by twos, 16 three by threes, 9 four by fours, 4 five by fives and 1 six by six. Puzzle 1155 What number comes next in this sequence: 1 8 9 64 25 216 49 ==?== [Ref: ZPPV] © Kevin Stone Hint: Think of squares and cubes. Answer: 512. Each term alternates between a square and a cube, 8 3 = 512. Puzzle 1156 What number comes next in this sequence: 3 24 102 312 777 ==?== [Ref: ZUCY] © Kevin Stone Hint: Answer: 1680. This is n to the power of 5, starting with 2^5 = 32, with the last digit missing, 7^5 = 16807.