state gov Bihar SSC (BSSC) Inter Level Mock Test 2024 - 25 Quantitative Aptitude Progression Arithmetic Progression
If the first term of an A.P. is a and nth term is b, then its common difference is
1
\(\rm \frac{b-a}{n+1}\)
2
\(\rm \frac{b-a}{n-1}\)
3
\(\rm \frac{b-a}{n}\)
4
\(\rm \frac{b+a}{n-1}\)