SSC CGL Model Paper 8

Concept:The series follows an arithmetic progression with a constant common difference.Explanation:Assume the last term $185$ is actually $1.85$.Convert all terms to fractions with denominator $20$ or decimals.$\frac{1}{4}=0.25$, $0.65=\frac{13}{20}$, $\frac{29}{20}=1.45$, and $1.85=\frac{37}{20}$.Find the difference between consecutive known terms.$0.65 - 0.25 = 0.40$.$1.85 - 1.45 = 0.40$.So the common difference is $0.40$.The missing term is $0.65 + 0.40 = 1.05 = \frac{21}{20}$.Answer:The missing number is $\frac{21}{20}$, which is option B.