यदि शब्द 'BUREAUCRATIC' के पहले और सातवें अक्षरों को आपस में बदल दिया जाए, इसी प्रकार दूसरे और आठवें अक्षरों को, और आगे भी ऐसा ही किया जाए, तो बाईं ओर से पांचवां अक्षर कौन सा होगा?

Refer to the following letter series and answer the question (counting from left to right): C B A S N U C O M D K I F J H A I P B E B H How many such consonants are there, each of which is immediately preceded by a consonant and also immediately followed by a consonant?

Refer to the given series and answer the question that follows (All numbers are single digit numbers only). Counting is to be done from left to right. (Left) 58561868515888941618425432126 (Right) How many such odd digits are there, each of which is immediately preceded by an even digit and also immediately followed by an even digit?