52 25 27 ? 208 1648
52 × 0.5 – 1 = 25 25 × 1 + 2 = 27 27 × 2 – 4 = 50 50 × 4 + 8 = 208 208 × 8 – 16 = 1648
Select the number from among the given option that can replace the question mark (?) in the following series.
6, 31, 126, 381, 766, ?
2, 5, 11, 23, ?
19 : 109 ∷ 21 : ?
Select the combination of numbers that when placed sequentially in the blanks of the given series will complete the series.
3 _ 3 _ 5 3 3 5 _ 3 3...
Select the option that is related to the third number in the same way as the second number is related to the first number.
15 : 5 :: 26 : (?)
UDGO : FWTL : : MXRC : ?
In the following expression find the missing term:
Find the missing number.
Select the number from among the given options that can replace the question mark (?) in the following table.
