Number Series MCQs with Answers

Complete the series: $\frac{3}{5}, \frac{5}{7}, \frac{7}{9}, ?$

• A.$\frac{9}{11}$
• B.$\frac{11}{13}$
• C.$\frac{8}{10}$
• D.$\frac{10}{12}$

Past Paper MCQ

What is the 101st term of the sequence: $1, 4, 7, 10, \dots$ ?

• A.$298$
• B.$301$
• C.$304$
• D.$307$

What is the formula for the $n$th term of an arithmetic sequence?

• A.$a_n = a_1 \cdot (n-1)d$
• B.$a_n = a_1 \cdot r^{n-1}$
• C.$a_n = a_1 + nd$
• D.$a_n = a_1 + (n-1)d$

Insert the missing number: $14, 9, 5, 21, 8, 13, 28, 9, \_\_\_\_\_?$

• A.$19$
• B.$15$
• C.$17$
• D.$21$

Find the next number in the sequence: $2, 12, 30, 56, 90, \text{( ? )}$

• A.$110$
• B.$120$
• C.$132$
• D.$144$

Complete the series: $0$, $5$, $15$, $20$, $30$, $35$, ?

• A.$40$
• B.$45$
• C.$50$
• D.$55$

What comes next in the series? $25, 34, 52, 79, 114, ?$

• A.$158$
• B.$160$
• C.$155$
• D.$162$

Find the 30th term of the arithmetic progression (AP): $10, 7, 4, \dots$

• A.$-77$
• B.$-80$
• C.$-74$
• D.$-83$

If three arithmetic means are inserted between $5$ and $25$, the second arithmetic mean is _?

• A.$10$
• B.$15$
• C.$20$
• D.$12$

The sum of an infinite geometric series exists only if the condition on the common ratio $r$ is

• A.$|r| < 1$
• B.$|r| > 1$
• C.$|r| = 1$
• D.$|r| \leq 0$