निम्नलिखित में से कौन सी संख्या दी गई श्रृंखला में प्रश्नवाचक चिह्न (?) को प्रतिस्थापित करेगी? 55, 55, ?, 330, 1320, 6600

What should come in place of the question mark (?) in the given series? 98, 100, 103, 108, 115, ?

Find the missing number in the given series: 4, 8, 8, 0, 6, 9, 11, 7, 7, 3, ?

What should come in place of the question mark (?) in the following series? 2, 3, 7, 8, 26, 27, 111, 112, ?