represent numbers 3 to 30 as rectangular, square, triangular dot patterns. represent these in a table form
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Question

By using dot (⋅) patterns, which of the following numbers can be arranged in all the three ways namely a line, a triangle and a rectangle?
A
9
B
10
C
11
D
12
Medium
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Solution

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Correct option is B)
As we know that every number can be arranged as a line.
The number 10 can be shown as
⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅
Also, the number 10 can be shown as a triangle as given below
⋅
⋅ ⋅
⋅ ⋅ ⋅
⋅ ⋅ ⋅ ⋅
And, the number 10 can also be shown as a rectangle, as given below :
⋅ ⋅
⋅ ⋅
⋅ ⋅
⋅ ⋅
⋅ ⋅
(5 rows and 2 columns)
or
⋅ ⋅ ⋅ ⋅ ⋅
⋅ ⋅ ⋅ ⋅ ⋅
(2 rows and 5 columns)
Answer:
https://byjus.com/question-answer/what-are-square-and-triangular-numbers/
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