Elementary Mathematics

If log25 5 = a and log25 15 = b, then the value of log25 27 is

If log25 5 = a and log25 15 = b, then the value of log25 27 is

  1. 3(b+a)
  2. 3(1-b-a)
  3. 3(a+b-1)
  4. 3(1-b+a)

Read more …

What is the solution of the equation x log10 (10/3) + log10 3

What is the solution of the equation
x log10 (10/3) + log10 3 = log10 (2 + 3x) + x?

  1. 10
  2. 3
  3. 1
  4. 0

Read more …

If x is a real number such that log3 5 = log5 (2 + x)

If x is a real number such that log3 5 = log5 (2 + x), then which of the following is true?

  1. 0 < x < 3
  2. 23 < x < 30
  3. x > 30
  4. 3 < x < 23

Read more …