Identify the correct option to complete the following series.
1, 3, 5, 11, 21, 43, 85, 171,___

Some equations are solved on the basis of a certain system. Find out the correct answer for the unsolved equation on that basis.
If 8 + 8 = 72, 5+5 = 30 and 7+7=56, what is 6+6 =?

Some boys are  sitting in a row. P is sitting fourteenth from the left and Q is seventh from the right. If there are four boys between P and Q, how many boys are there in the row ?

Find the next number in the series.
4, 9, 20, 43, ?

Find the missing number in the given figure?

Mahesh walks 15 km north of his house. He then turns to his right and walks 12 km. He then turns to his left and walks 9 km. Then he turns to his right and walks 12 km, then tell in which direction his house is now?

Arrange the following words in a logical and meaningful order.
1. Rajasthan
2. India
3. Jaipur
4.North India
5. Asia

Direction : Study the following information carefully and answer the questions given below:
Six persons are sitting in a row facing to the north and they have different ages but not necessarily in the same order. C sits 3rd from one of the end. The one who is 12 year old sits 2nd to the right of C.
The number of persons sit right of the one who 12 year old is same as the number of persons sit to the left of D. O sits 2nd to the right of the one who is 6 year old. Two persons sit between D and B, whose age is twice than D. N sits to the right of P. The one who 36 year old sits 3rd to the left of the one who 15 year old. The age of O is 18 year.

If P is 3 year older than C, then which of the following is the age of P?