Class XI

If (0.2)x = 2 and log 2 = 0.3010, then the value of x to the nearest tenth is:
  1. -10.0
  2. -0.5
  3. -0.4
  4. -0.2
The sum of three numbers is 98. The ratio of the first to the second is 2/3, and the ratio of the second to the third is 5/8. The second number is:
  1. 30
  2. 20
  3. 32
  4. 33
The distance light travels in one year is approximately 5,870,000,000,000 miles. The distance light travels in 100 years is:
  1. 587 × 108 miles
  2. 587 × 1010 miles
  3. 587 × 10-10 miles
  4. 587 × 1012
The fraction (5x-11)/(2x2 + x - 6) was obtained by adding the two fractions A/(x + 2) and B/(2x - 3). The values of A and B must be, respectively:
  1. 5x, -11
  2. -11, 5x
  3. -1, 3
  4. 3, -1
If 102y = 25, then 10-y equals:
  1. -1/5
  2. 1/625
  3. 1/50
  4. 1/5
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