CA Foundation P3 · Chapter 1 · Question 5 of 9
The value of (xᵃ/xᵇ)^(a+b) · (xᵇ/xᶜ)^(b+c) · (xᶜ/xᵃ)^(c+a) is:
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: D) 1
Explanation
Each factor simplifies using (xᵃ/xᵇ)^(a+b) = x^((a−b)(a+b)) = x^(a² − b²). The product is x^((a² − b²) + (b² − c²) + (c² − a²)) = x⁰ = 1. Note x⁰ equals 1, not 0.
More Ratio and Proportion, Indices and Logarithms MCQs
- Q7Given log 2 = 0.3010 and log 3 = 0.4771, the value of log 72 is:
- Q8If log₄ x = 2.5, then x is equal to:
- Q9If a² + b² = 7ab (a, b > 0), then log((a + b)/3) is equal to:
- Q1Two numbers are in the ratio 5 : 8. If 9 is added to each number, the ratio becomes 2 : 3. The two numbers are:
- Q2The duplicate ratio of 3 : 7 is:
