Question
Three of the following four letter-clusters are alike in
a certain way and one is different. Pick the odd one out. PTXB GKOS HKNQ MQUYSolution
P + 4 = T, T + 4 = X, X + 4 = B G + 4 = K, K + 4 = O, O + 4 = S H + 3 = K, K + 3 = N, N + 3 = Q M + 4 = Q, Q + 4 = U, U + 4 = Y
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