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

26, 54, 110, 222, ?,  894

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

12, 25, 51, 103, ?, 415, 831

Which number from the options will replace the question mark (?) in the following series?
 3, 13, 53, 213, ?

Directions: Find the wrong number in the following number series:

4, 5.1, 7.3, 10.6, 15, 20, 27.1

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

121, 169, 289, ?, 529, 841

Select the set in which the numbers are related in the same way as are the numbers of the following sets.

(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 – Operations on 13 such as adding /deleting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

(3, 6, 18) (5, 7, 35)

Select the number from among the given options that can replace the question mark (?) in the following series.
 121, 144, 169, ?, 225, 256 

Directions: Find the wrong number in the following number series:

251, 252, 254, 227, 243, 118, 154