The price of a pen, a book and a shirt are 56, 72, and 120 respectively. How much minimum rupees should a person take with him so that after purchasing either of articles in whole numbers he saves 20.

The series given below contains a sequence of numbers. Identify the incorrect combination.
2, 15, 41, 80, 134

Find the wrong number in the series-

2880, 480, 92, 24, 8, 4, 4

Direction : In the following question, select the correct answer from the given alternatives.
2, 8, 16, 128, ?

The series given below contains a sequence of numbers. Identify the incorrect combination: 

56, 54, 58, 49, 66, 34

Direction (66-70): What should come in place of the question mark(?) in the following number series?

22, 21, 23, 22, 24, 23, ?

Complete the following series.
12, 8, 14, 6, 16, ?

Find the missing number in the given series.
1, 3, 9, 31, ___ 651