d= a2 - a1 = a3- = a4- = -

d= a₂ - a₁ = a₃- = a₄- = -

Dear student,

6) d = a_{2} - a_{1} = a_{3} - a_{2} = a_{4} - a_{3} = a_{5} - a_{4}

Regards

Aakash EduTech Pvt. Ltd.

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