JAMB Mathematics 2006 Question 25

Question 25

Indices

Simplify (25)−½ × (27)1/3 + (121)−½ × (625)−¼

  1. A.34/55
  2. B.9/11
  3. C.14/5
  4. D.3/275
Show the answer and explanation

Answer: A (34/55)

Explanation

This is 1/5 × 3 + 1/11 × 1/5 = 3/5 + 1/55 = 33/55 + 1/55 = 34/55.