Circle the figure that comes next in the pattern above. The five figures at the bottom are numbered 1 to 5: the first row from left to right is 1, 2, 3 and the second row is 4, 5.
Study the first two figures. Then find the missing number in the last figure. The numbers are: first cross 2, 1, 3, 4, 10; second cross 6, 2, 9, 2, 19; third cross 3, 5, ?, 7, 28.
Use the digits 3, 4, 5 and 6 once each to fill in the boxes (a three-digit number times a one-digit number) to get the greatest product. What is the greatest product?