Question

cost of pen in rs 20, a merchant sells first pen for rs 2, 2nd pen for rs4 3rd pen for rs6 and so on.what is the no. of pen he should sell to get profit of 20%. a-20 b-21 c-22 d-23

Answer 1

a,20 pens should sell

Answer 2

HeÿA ¡!

Answer :
20 pens

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