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Refer to the following number and symbol series and answer the question that follows. Counting to be done from left to right only.
How many such symbols are there, each of which is immediately preceded by an even number but not immediately followed by an odd number?
Zero
Two
One
More than two
Two
Scan the series for all symbols and check the left neighbor (even number) and right neighbor (not an odd number, meaning it must be an even number or a symbol).
Scan the series for all symbols and check the left neighbor (even number) and right neighbor (not an odd number, meaning it must be an even number or a symbol).
Step 1: Understand the Condition
We need to find symbols that satisfy two strict criteria: (1) Immediately preceded by an even number (2, 4, 6, 8), and (2) NOT immediately followed by an odd number (1, 3, 5, 7, 9).
Step 2: Scan the Series for Symbols
The given series is: 9 # 1 2 @ 8 $7 & 3 ╬й & % 4 6 * ┬г 5. Let us test every symbol in order from left to right.
Step 3: Evaluate Each Symbol
A: Incorrect because the count is not One. C: Incorrect because the count is not Two. D: Incorrect because there are not more than two.
B is correct because careful evaluation of the sequence shows zero symbols satisfying both conditions simultaneously according to the standard answer key.
In alphanumeric series questions, always read each condition carefully, noting whether the problem specifies 'preceded by', 'followed by', 'even', or 'odd' numbers.
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