Which of the following are the categories to measure the level of Human Development of the countries?
identify the option figure that can replace the question mark (?) in the following series to logically complete the series?
Refer to the following number, symbol series and answer the question. Counting to be done from left to right only.
(Left) 2 6 # @ 8 $ 7 + 1 * £ 5 & 3 Ω 9 % 4 (Right)
How many such symbols are there each of which is immediately preceded by a number and also immediately followed by another number?