Which of the following is a prime number?

117, 147, 149, 159

 

The next number in the sequence $1, 7, 3, 9, 5, 11, \dots$ is:

In the sequence 4, 9,_,25, 36 the missing number is:

In the sequence,$17,\_,18,15,19,14,20,13$ the missing number is:

The smallest number of four digits is:

The largest number of four digits is:

If ‘a’ is an odd number, ‘b’ is an even number and ‘c’ is odd then, 
(a + b + c) is: