Which of the following can be used to illustrate that not all prime numbers are odd? 

 

What will come in place of the question mark in the series below?

7, 4.5, 5.5, 12, 49, ?

What will come in place of the question mark (?) in the following number series?

3240, 540, 108, 27, ?, 4.5

There are four consecutive even integers. Sum of the reciprocals of the first two number is (11/60). Find the reciprocal of third largest number of the series.

There is a three digit number. The digit at the tenth place is 3. If the place of all the digits are replaced with each other symmetrically about the tens position,then the new number obtained is 396 more than the original three digit number. The sum of the digits at unit & hundredth place is 14. Find out the original number?

Direction: What should come in the place of question mark (?) in the following number series? 24, 25, ?, 41, -8, 73

Direction: What should come in the place of question mark (?) in the following number series?

7, 10, 16, 28, ?, 100

Direction: What should come in the place of question mark (?) in the following number series?

3, 4, 10, 33, 136, ?

Direction: What should come in the place of question mark (?) in the following number series?

2, 3, 6, 15, 45, ?