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Maths CBSE Live product
Class 7 (2025-26)
Expressions using letter number
Annual Revision III - Expressions using letter number
12.
TBQ - General formula for square pattern
Question:
5
m.
Observe the pattern below.
1.
How many squares will be there in step
9
, step
47
, step
68
?
Step
9
:
Step
47
:
Step
68
:
2
. Write a general formula:
4n-1
4n
4n + 1
3
. How would the formula change if we want to count the number of vertices of all the squares?
16n+4
4n+4
4n-1
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