COOP Test of Sequences 4

Question 1

What number is missing? 3, 9, 27, ___, 243

Accepted Answer

81

Answer

Each term is multiplied by 3: 3×3=9, 9×3=27, 27×3=81, 81×3=243.

Question 2

What comes next? 50, 45, 40, 35, ___

Accepted Answer

30

Answer

Each term decreases by 5: 50−5=45, 45−5=40, 40−5=35, 35−5=30.

Question 3

Which letter continues the sequence? Y, W, U, S, ___

Accepted Answer

Q

Answer

Each letter moves two places backward in the alphabet: Y, W, U, S, Q.

Question 4

Find the next term: 2, 6, 18, 54, ___

Accepted Answer

162

Answer

Each term is multiplied by 3: 2×3=6, 6×3=18, 18×3=54, 54×3=162.

Question 5

What is missing? 10, 20, ___, 80, 160

Accepted Answer

40

Answer

Each term is doubled: 10×2=20, 20×2=40, 40×2=80, 80×2=160.

COOP Exam Practice Test