a2zinterviews

1.	Which number should go in the empty box?

Answer

Ans = 8. For each number on the left, starting at the top, double it and subtract 1, then 2, 3, 4 etc. to give the right hand number.

2.	Which number needs to be added to complete the last wheel?

Answer

Ans = 42. Divide each circle into left and right halves. The top right value equals the sum of the left hand numbers, the middle right value equals the product of the left hand numbers and the bottom right hand value equals the sum of the squares of the left hand numbers.