If 2n= 128, then (2n–1) (5n-2) = ?

Subject

Quantitative Aptitude

Topic

Power & Logarithm

ক)

2 × 105

খ)

5 × 105

গ)

2 × 106

ঘ)

2 × 56

দেওয়া আছে, 2 n = 128 ⇒ 2 n = 27 ∴ n=7 তাহলে, (2 n –1 ) (5 n-2 ) = (2 7 –1 ) (5 7-2 ) = (2 6 ) (5 5 ) = 2 × 2 5 × 5 5 = 2 × 10 5

If 2­­­­­n= 128, then (2n­–1) (5n-2) = ?