- A17
- B16
- C32
- D15
Step-by-Step Solution
Each result is a square: 1, 4, 9, so the pattern gives . Here the top number is 4, so the sum is .
Answer: B) 16
Look at the pattern of sums:
1 = 1
1 + 2 + 1 = 4
1 + 2 + 3 + 2 + 1 = 9
What does 1 + 2 + 3 + 4 + 3 + 2 + 1 equal?
Class 6Patterns in Whole NumbersWhole Numbers
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