Find the missing numbers.
- X
- Y
- Z
- A
Pattern for right half of the circle.
22 + 5 = 27
22 + 6 = 28
For right half of the circle:
Centre number + Number at the second ring = Number at the outer ring
(a) X = 27 - 22 = 5
(b) Y = 22 + 9 = 31
Pattern for left half of the circle.
22 - 6 = 16
22 - 12 = 10
For left half of the circle:
Centre number - Number at the second ring = Number at the outer ring
(c) Z = 22 - 17 = 5
(d) A = 22 - 11 = 11
Answer(s): (a) 5; (b) 31; (c) 5; (d) 11