What number should replace the question mark? (Three pyramids have bottom numbers 3 and 12, 2 and 8, ? and 4, and top numbers 6, 4 and 2.) Answer with a natural number.
329 : 15 and 746 : 34. Which pair of numbers has the same relationship to each other as the two pairs above? 287 : 22; 698 : 62; 942 : 68; 382 : 12; 749 : 35
What number should replace the question mark? Three triangles have a top number, bottom-left and bottom-right numbers, and a middle number: (3, 8, 4, 44), (9, 7, 2, 32) and (8, 7, ?, 75). Answer with a natural number.
What number should replace the question mark? Four groups of five numbers (top, left, middle, right, bottom): (3, 5, 11, 9, 7), (5, 9, 21, 17, 13), (4, 7, 16, 13, 10), (6, 11, ?, 21, 16). Answer with a natural number.
What number should replace the question mark? Each triangle has a top, left and right number and a centre number: (13, 8, 3, 6), (17, 19, 6, 10) and (23, 15, 5, ?). Answer with a natural number.
What number should replace the question mark? Each triangle has a top, left, right and centre number: (8, 7, 784, 14), (3, 9, 486, 18) and (9, 5, 540, ?). Answer with a natural number.
What number should replace the question mark? The shapes and numbers are: triangle 27, parallelogram 64, pentagon 125, hexagon 216 and a heptagon with ?. Answer with a natural number.