Let x = (50.49)5Taking log on both side⇒ log x = 5 log (50.49) (∵ log an = n loga)= 5 × 1.7032logx = 8.516⇒ x = antilog 8.516 = 32810000

Q6 of 124 Page 37

Evaluate:
(50.49)⁵

Let x = (50.49)⁵

Taking log on both side

⇒ log x = 5 log (50.49) (∵ log aⁿ = n loga)

= 5 × 1.7032

logx = 8.516

⇒ x = antilog 8.516 = 32810000

Evaluate:

0.000645 × 82.3

Evaluate:

0.3421 ÷ 0.09782

Evaluate:

Questions · 124

2. Scientific notations of real numbers and logarithms

1 1 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 1 2 2 2 2 2 2 3 3 3 3 3 3 4 4 4 4 4 4 5 5 5 5 5 5 6 6 6 6 6 6 7 7 7 7 7 7 7 7 8 9 9 9 9 9 9 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3 4 4 4 4 4 4 5 6 6 6 6 6 6 6 6 6 6 6 6 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10

Evaluate:(50.49)5