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Practice set

Letter Sequences • Hard 1 Set

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Repeat tip: Repeating the same set after 48 hours is surprisingly effective. Your brain learns the “rule types.”
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Answer key & explanations

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LS-017 • Difficulty 1/5

Find the next letter: A – F – K – P – U – ?

Answer: Z

Rule: Shift forward by 5 each time.

So the next letter is Z.

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LS-015 • Difficulty 1/5

Find the next letter: G – J – M – P – S – ?

Answer: V

Rule: Shift forward by 3 each time.

So the next letter is V.

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LS-004 • Difficulty 2/5

Find the next letter: H – J – N – P – T – ?

Answer: V

Rule: Alternate shifts: +2, +4, +2, +4, ... so next continues the pattern.

So the next letter is V.

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LS-005 • Difficulty 2/5

Find the next letter: H – J – L – N – P – ?

Answer: R

Rule: Take every 2th letter in the alphabet.

So the next letter is R.

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LS-002 • Difficulty 4/5

Find the next letter: M – Q – U – Y – C – ?

Answer: G

Rule: Shift forward by 4 each time.

So the next letter is G.

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LS-003 • Difficulty 4/5

Find the next letter: G – J – M – P – S – ?

Answer: V

Rule: Shift forward by 3 each time.

So the next letter is V.

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LS-013 • Difficulty 4/5

Find the next letter: K – P – U – Z – E – ?

Answer: J

Rule: Shift forward by 5 each time.

So the next letter is J.

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LS-001 • Difficulty 5/5

Find the next letter: R – W – Z – E – H – ?

Answer: M

Rule: Alternate shifts: +5, +3, +5, +3, ... so next continues the pattern.

So the next letter is M.

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LS-008 • Difficulty 5/5

Find the next letter: C – D – F – G – I – ?

Answer: J

Rule: Two interleaved sequences. The next letter continues the odd-position stream.

So the next letter is J.

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LS-019 • Difficulty 5/5

Find the next letter: W – Y – A – C – E – ?

Answer: G

Rule: Take every 2th letter in the alphabet.

So the next letter is G.

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