Nai Ling created a number pattern as shown.
- What number can be found in Row 22, Column Q?
- In which row will the number 289 be found?
(a)
Pattern for the number in Column Q
Row 3: (3 - 3) x 5 + 34 = 34
Row 4: (4 - 3) x 5 + 34 = 39
Row 5: (5 - 3) x 5 + 34 = 44
Formula:
Number in Column Q = (Row number - 3) x 5 + 34
Number in Row 22, Column Q
= (22 - 3) x 5 + 34
= 95 + 34
= 129
(b)
Row number for 289
= (289 - 34) ÷ 5 + 3
= 255 ÷ 5 + 3
= 54
Answer(s): (a) 129; (b) 54