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ID#4141 42nd BCS General Math Preli

sec A + tan A = 5/2 হলে, sec A - tan A = ?

ID#3926 41st BCS General Math Preli

$\sqrt{-8} \times \sqrt{-2} = $ কত?

ID#3938 41st BCS General Math Preli

$\log_2 \log_\sqrt{e} e^2 = ?$

ID#3842 40th BCS General Math Preli

কোন শর্তে $\log_a 1 = 0$ হবে?