Question
BEHK, ZWTQ, LORU,
? Select the letter that can replace the question mark in the following series.Solution
B + 3 = E, E + 3 = H, H + 3 = K Z – 3 = W, W – 3 = T, T – 3 = Q L + 3 = O, O + 3 = R, R + 3 = U P – 3 = M, M – 3 = J, J – 3 = G
7, 14, 42, 210, 1470, ?
A sequence {Vₙ} is defined for n ≥ 1 by:
I) For every n ≥ 3: Vₙ = 2Vₙ₋₁ − Vₙ₋₂ + 4
It is known that - V₃ = 22 and ...
12, 20, 36, ?, 132, 260
If 6 4 x 5.75 9,
Then, (x²-1) = ?
...12 13 30 �...
112 162 199 ? 242 252
...21 11.5 13 ? 45.5 116.75
...171, 173, 183, 213 , ‘?’, 411, 633.
114 106 102 100 99 ?
...Choose the correct alternative
21: 3 ∷ 574: ?