निम्नलिखित में से कौन सा अक्षर-संख्या समूह दी गई श्रृंखला में प्रश्न चिह्न (?) को प्रतिस्थापित करेगा ताकि यह तार्किक रूप से पूर्ण हो जाए? CE 17 GI 19 KM 23 OQ 29 ?

Refer to the following letter and symbol series and answer the question that follows. Counting is to be done from left to right only. (Left) J @ € * Y % V % C I D % D H $ K © L E £ M C (Right) How many such symbols are there, each of which is immediately preceded by a letter and also immediately followed by a letter?

Refer to the following letter series and answer the question that follows. Counting is to be done from left to right only. (Left) O K A E K J E E K R Y U V J M W O F E O Y A (Right) How many such vowels are there, each of which is immediately preceded by a consonant and also immediately followed by a vowel?