Study the number pattern carefully.
- What is the missing number in the 7th pattern?
- What is the missing number in the 16th pattern?
- If this number pattern goes on, which pattern number will give you 680?
(a)
Pattern 1: 1
2 + 4 = 5
Pattern 2: 2
2 + 4 = 8
Pattern 3: 3
2 + 4 = 13
Pattern 4: 4
2 + 4 = 20
Formula:
Number for each pattern = Pattern number
2 + 4
Missing number in 7th pattern
= 7
2 + 4
= 53
(b)
Missing number in 16th pattern
= 16
2 + 4
= 260
(c)
Pattern number
2 + 4 = 680
Pattern number
2 = 680 - 4 = 676
Pattern number
= √676
= 26
Answer(s): (a) 53; (b) 260; (c) 26