Question

sides of a rectangular hexagon are produced, then the value of the 1+2+3+4+5+6is

Answer 1

The value of 1+2+3+4+5+6 is 21.

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1+2= 3
3+3= 6
6+4 =10
10+5 = 15
15+6 = 21
______________

Hence, the correct answer is 21