दी गई श्रृंखला में ऐसी कितनी संख्याएँ हैं जिनके तुरंत बाद एक प्रतीक है? M # 4 % V 2 H ! D 6 # K 3 S ! D 7 N # 9 D # 6 J 2 @ V S

Refer to the following letter-number-symbol series and answer the question. Counting is to be done from left to right. All numbers are single-digit numbers. (Left) V 3 J @ L # E Z T 3 G 4 4 4 E 2 & 3 C Y $ G (Right) How many such letters are there each of which is immediately preceded by a number and also immediately followed by a symbol?

How many such pairs of digits are there in the number '2817296458' that have the same number of digits between them as in the natural number sequence, when counted in both forward and backward directions?