What should come in place of ? in the following series ? 117, 98, 80, 64, ?, 42

What should come in place of question mark (?) in the following number series? 132 156 ? 210 240 272

Which number should replace ‘?’ in the following series? 240, 120,? , 180, 360, 900

What will come in place of question mark (?) in the series X5C, U8F, ?, O17L, L23O?

What will be the next number in the following number series? 48, 24, 72, 36, 108, ?

Which term is wrong in the following series? 8, 13, 21, 32, 47, 63, 83