Question

3. Represent the following numbers as triangles :
(i) 6
(ii) 10
(iii) 28
(iv) 36
(v) 21
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Answer 1

Answer:

answer is=(v)21

Step-by-step explanation:

3. Represent the following numbers as triangles=(v) 21

Answer 2

Answer:

first triangle number is 1+2+3

The second triangle number is 1+2+3+4

The third triangle number is 1+2+3+4+5+6+7

The forth triangle number is 1+2+3+4+5+6+7+8