Refer to the following number and symbol series and answer the given question. Counting is to be done from left to right only.(left) & < 2 7 > / 7 5 6 / < @ * 6 @ 8 3 9  & ^ 6 (right)

Refer to the following number and symbol series and answer the given question. Counting is to be done from left to right only.
निम्नलिखित संख्या और प्रतीक श्रृंखला का संदर्भ लें तथा दिए गए प्रश्न का उत्तर दें। गिनती केवल बाएं से दाएं की जानी है।
(left) & < 2 7 > / 7 5 6 / < @ * 6 @ 8 3 9  & ^ 6 (right)
How many such symbols are there, each of which is immediately preceded by a number and immediately followed by a number?
 ऐसे कितने प्रतीक हैं, जिनमें से प्रत्येक के ठीक पहले एक संख्या तथा ठीक बाद में भी एक संख्या हैं?