Great thinkers only!!

Great thinkers only!!

Mambo ya topiki ya sikwensi endi sirizi...

Jibu lako nadhani lipo sahihi...

reading the series the formula mighty be N*(N-1)

when 8 , 8*(8-1)=56
when 7, 7*(7-1)=42
when 6, 6*(6-1)=30
when 5, 5*(5-1)=20

when 3, 3(3-1)=6

i am not genius though......
 
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