Consider the pattern.
- What is the sum of Row 8?
- What is the sum of Row 11?
- If the sum is 1369, what is the row number?
(a)
Pattern for the sum of each row
Row 1: 1
2 = 1
Row 2: 2
2 = 4
Row 3: 3
2 = 9
Formula:
Sum of each row = (Row number)
2 Sum of Row 8
= 8
2 = 8 x 8
= 64
(b)
Sum of Row 11
= 11
2 = 11 x 11
= 121
(c)
Row number = √(Sum of each row)
Row number with the sum 1369
= √1369
= 37
Answer(s): (a) 64; (b) 121; (c) 37
