Which of the following options is divisible by 11?

Which of the following numbers will replace the question mark (?) in the given series?

5103, 1701, 567, ?, 63, 21

Find the wrong number in the given series from the given alternatives -
14, 39, 84, 155, 260

The value of $$3{2\over7}+14{4\over9}+5{3\over9}$$ is:

Which of the following numbers will replace the question mark (?) in the given series?

67, 78, 71, 82, 75, 86, ?

Which of the f ollowing numbers will replace the question mark (?) in the given series?
 15, 27, 12, ?, 9, 33

Identify the number that does NOT belong to the following series. 

49, 98, 196, 394, 784, 1568

Which of the following numbers will replace the question mark (?) in the given series?
 4, 9, 17, 30, 50, 81, 125, ?