How many prime numbers are there between $1$ and $100$ ?

Identify the wrong number in the series.

$5,35,220,1050,4200$   

Identify the wrong number in the series.

$256,343,64,49,16,7,2,1$

In the following series, how many pairs of successive numbers have a difference of $2$ each?

$6$ $4$ $1$ $2$ $2$ $8$ $7$ $4$ $2$ $1$ $5$ $3$  $8$$6 2 1$$7 1 4 1$

In the following questions, four pairs of numbers are given. Of these, three are alike and one is different. Find the one which is different.

In the following questions, four pairs of numbers are given. Of these, three are alike and one is different. Find the one which is different. 

In the following questions, four pairs of numbers are given. Of these, three are alike and one is different. Find the one which is different.

In the following questions, four pairs of numbers are given. Of these, three are alike and one is different. Find the one which is different.

 In the given number series, how many $6$ are there which are preceded by odd number and followed by even number.

$3 6 2 5 6 3 2 6 2 7 6 4 6 5 8 6 7 6 4 2 6 8$

Select the options in which the numbers are related in the same way as are the numbers in the given set.

$\left(45,24,441\right)$