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Problem of the Week
Problem D
Blocked Numbers

Twelve blocks are arranged as illustrated in the following diagram.

The blocks are placed side by side. Each block has either a capital letter or a number on its front face. The fronts of the blocks show the sequence 4, B, C, D, E, F, 5, H, J, K, L, 7.

Each letter shown on the front of a block represents a number. The sum of the numbers on any four consecutive blocks is \(25\). Determine the value of \(B + F + K\).