Refer to the following number and symbol series and answer the question that follows.
Counting to be done from left to right only.
(NOTE: All numbers are single digit numbers only.)
(Left) 7 @ £ 1 @ 7 # * 8 7 8 6 5 3 8 4 € # £ 9 1 £ (Right)
How many such symbols are there each of which is immediately preceded by a number and also immediately followed by a number?
Number Symbol Series Analysis
The question requires us to analyze a given series composed of numbers and symbols: 7 @ £ 1 @ 7 # * 8 7 8 6 5 3 8 4 € # £ 9 1 £. We need to determine the count of symbols that satisfy a specific condition. The analysis must proceed from left to right only.
Identifying Qualifying Symbols
The core task is to find symbols where the character immediately preceding it is a number, and the character immediately following it is also a number. Let's systematically examine the series to find symbols meeting this exact criterion.
| Symbol | Character Immediately Before | Character Immediately After | Preceded by Number? | Followed by Number? | Qualifies? |
|---|---|---|---|---|---|
| @ | 7 | £ | Yes | No | No |
| £ | @ | 1 | No | Yes | No |
| @ | 1 | 7 | Yes | Yes | Yes |
| # | 7 | * | Yes | No | No |
| * | # | 8 | No | Yes | No |
| € | 4 | # | Yes | No | No |
| # | € | £ | No | No | No |
| £ | # | 9 | No | Yes | No |
| £ | 1 | (End of series) | Yes | No | No |
From the analysis presented in the table, we can observe that only one symbol meets the criteria: the '@' symbol situated between the number '1' and the number '7'. All other symbols fail to meet at least one part of the condition (either being preceded by a number, followed by a number, or both).
Final Count of Symbols
By applying the rule – a symbol must be immediately preceded by a number and immediately followed by a number – to the entire series from left to right, we find that exactly one symbol fulfills these requirements.
Important Questions from Alpha-numeric series
Consider the following sequence of numbers: 5 1 4 7 3 9 8 5 7 2 6 3 1 5 8 6 3 8 5 2 2 4 3 4 9 6 How many odd numbers are followed by the odd number in the above sequence?
Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it? _sr_tr_srs_r_srst_
Find the missing number in the following series: 43, 172, 86, 344, ?
Select the missing numbers from the given alternatives
How many such pairs of letters are there in the word JOURNEY (in forward direction), each of which has as many letter in the same sequence between them in the word as in the English alphabet?
