Which of the following will be the middle digit of the second lowest number among the five numbers given below?
$317, 528, 439, 254, 861$

Choose the correct alternative to complete the series: $a \_ n \_ b \_ \,, \, \_ n c b \_ \,, \, \_ n c b$

Study carefully the following arrangement of letters, digits and symbols to answer these

questions.

$M, 7 ,\&, 8, L ,P ,@ ,Q ,N ,\beta ,T ,Y ,3 ,2 ,= ,E ,\$ ,4 ,9 ,\#, G ,H ,5$

How many such symbols are there in the arrangement each of which is immediately preceded by a number?

Fill in the blank space for the given series with the correct alternative.
$1, 1, 3, 9, 6, 36, 10, 100, (\ldots), 225$

Fill in the blank space for the given series with the correct alternative.
$5, 6, 7, 8, 10, 11, 14, (\ldots)$

If the numbers from $1$ to $45$ which are exactly divisible by $3$ are arranged in ascending order,with the minimum number at the top,which number would be at the ninth place from the top?