Which of the following numbers will replace the question mark (?) in the given number series?
 56, 68, ?, 128, 176, 236

Which of the following numbers will replace the question mark (?) in the given series
 13, 14, 23, 48, 97, 178, ? 

Which letter-cluster will replace the question mark (?) to complete the given series?
 XAPE, BIBU, ?, JYZA, NGLQ

Direction: What value will come in place of the question mark (?) in the following question?

230, 204, 187, 177, 172, ?

Which letter cluster will replace the question mark (?) to complete the given series?
 NAME, NEME, ?, NOME, NUME

Direction: What value will come in place of the question mark (?) in the following question?

33, 42, 67, 116, 197, ?