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হোম›নবম-দশম শ্রেণি›English Version›Mathematics›Finite Series›C-13-Q088

C-13-Q088mediumsingle_mcq

The common difference of Palash's net salary series after $10\%$ PF deduction is —

a $4500$
b $5000$
c $5500$
d $4000$

ব্যাখ্যা

The net series is $90\%$ of the gross series, so the common difference scales by the same factor: $0.9\times5000 = 4500$ Tk.

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