arithmetic progression

Question

The arithmetic mean of 5 and 15 is

RankGuru · Accepted Answer

1. **Definition of AM**: The arithmetic mean of two numbers $a$ and $b$ is the number $M$ such that $a, M, b$ form an AP.
2. **Formula**: $M = \frac{a + b}{2}$.
3. **Calculation**:
   - $M = \frac{5 + 15}{2} = \frac{20}{2} = 10$.
4. **Result**: The AM is 10.

Rank Guru

arithmetic progression

Select the correct option:

More arithmetic progression Practice Questions

The sum of the first 20 terms of an AP with first term 5 and common difference 3 is

The 10th term of the AP 3, 7, 11, 15, ... is

If the 3rd term of an AP is 7 and the 7th term is 23, then the 10th term is