Number Series

$5,9,17,29,45, ?$ Find the missing number.

Look at this series: $3,4,7,8,11,12,...$. What number should come next?

In the following number series how many $9$’s are there which are preceded by $3$ and followed by $6$ ?
$39693939396363956956939639$

$120, 99, 80, 63, 48, ?$

The next no. is _____.

Complete the series:

$8, 10, 14, 18, (...), 34, 50, 66$

Look at this series:$\mathrm{XXIV}, \mathrm{XX}, \mathrm{\_\_}, \mathrm{XII}, \mathrm{VIII}, ...$What number should fill the blank?

Complete the series, $1, 4, 9, 16, 25$,....

If $\mathrm{x}+\mathrm{y}+410-305=171$ and$\mathrm{x} = 2\mathrm{y}$, then find the value of $y$.

Look at this series: $\mathrm{XXIV},\mathrm{XX},\mathrm{\_\_},\mathrm{XII},\mathrm{VIII}, ...$. What number should fill the blank?

Look at this series: $72,76,73,77,74, \_\_, 75,...$ What number should fill the blank?

$36, 34, 30, 28, 24, ...$ What number should come next?

Look at this series: $544,509,474,439,...$ What number should come next?

Look at this series:$2,4,6,8,10,...$. What number should come next?

11, 12, 17, 18, 23, 24, (....) . Which term will come next ?

What should come in the place of ($?$) for the series given below?

$3 , 6 , 13 , 28 , ?$

Look at this series:$8,43,11,41,\_\_,39,17,...$.What number should fill in the blank?

Look at this series:$664,332,340,170, \_\_\_\_,89,...$. What number should fill the blank?

$1,9,17,33,49,73$, ?. Complete the series by finding the missing number.

Look at this series:$53,53,40,40,27,27,...$ What number should come next?

Look at this series:$15,\_\_,27,27,39,39,...$ What number should fill the blank?