8^9.4 \times 4^12.8 \times 64^8.1 = 16^{?}

RRB NTPC Mains or Stage 2 Model Paper 4 with solutions

Question : 17 of 120

Marks: +1, -0

8^9.4 × 4^12.8 × 64^8.1 = 16^{?}

Solution:

(d)

8^9.4 × 4^12.8 × 64^8.1 = 16^{?}

8^{2×4.7} × 4^12.8 × 64^8.1 = 16^{?}

64^4.7 × 4^12.8 × 64^8.1 = 16^{?}

64^{4.7+8.1} × 4^12.8 = 16^{?}

(64 × 4)^12.8 = 16^{?}

(256)^12.8 = 16^{?}

16^{2×12.8} = 16^{?}

16^25.6 = 16^{?}

? = 25.6

Go to Question:

Prev Question

Next Question