Pembahasan Latihan Soal TPA Deret (2)

1. 75 97 60 92 45 …
   

   A. 87
   

   B. 78
   

   C. 102
   

   D. 75
   

   E. 54
   

   PEMBAHASAN :
   

   u₁ = 75
   

   u₃ = 75 – 15 = 50
   

   u₅ = 60 – 15 = 45
   

   u₂ = 97
   

   u₄ = 97 – 5 = 92
   

   u₆ = 92 – 5 = 87
   

   JAWABAN : A
   

2. 17 21 23 27 …
   

   A. 31
   

   B. 33
   

   C. 32
   

   D. 29
   

   E. 25
   

   PEMBAHASAN :
   

   u₁ = 17
   

   u₂ = 17 + 4 = 21
   

   u₃ = 21 + 2 = 23
   

   u₄ = 23 + 4 = 27
   

   u₅ = 27 + 2 = 29
   

   JAWABAN :
   

3. 7 6 7 11 7 16 8 21 8 26 8 … dan …
   

   A. 31 – 8
   

   B. 31 – 9
   

   C. 25 – 8
   

   D. 29 – 7
   

   E. 31 – 7
   

   PEMBAHASAN :
   

   u₁ = u₃ = u₅ = 7
   

   u₇ = u₉ = u₁₁ = 8
   

   u₉ = 9
   

   u₂ = 6
   

   u₄ = 6 + 5 = 11
   

   u₆ = 11 + 5 = 16
   

   u₈ = 16 + 5 = 21
   

   u₁₀ = 21 + 5 = 26
   

   u₁₂ = 26 + 5 = 31
   

   JAWABAN : B
   

4. 1 5 9 2 6 10 3 …, …, dan …
   

   A. 6 – 11 – 4
   

   B. 7 – 11 – 4
   

   C. 7 – 12 – 5
   

   D. 6 – 12 – 3
   

   E. 8 – 11 – 5
   

   PEMBAHASAN :
   

   u₁ = 1
   

   u₄ = 1 + 1 = 2
   

   u₇ = 2 + 1 = 3
   

   u₁₀ = 3 + 1 = 4
   

   u₂ = 5
   

   u₅ = 5 + 1 = 6
   

   u₈ = 6 + 1 = 7
   

   u₃ = 9
   

   u₆ = 9 + 1 = 10
   

   u₉ = 10 + 1 = 11
   

   JAWABAN : B
   

5. -4 -3 0 5 12 …
   

   A. 21
   

   B. 19
   

   C. 17
   

   D. 15
   

   E. 23
   

   PEMBAHASAN :
   

   u₁ = -4
   

   u₂ = -4 + 1 = -3
   

   u₃ = -3 + 3 = 0
   

   u₄ = 0 + 5 = 5
   

   u₅ = 5 + 7 = 12
   

   u₆ = 12 + 9 = 21
   

   JAWABAN : A
   

6. 18 16 14 19 17 15 …
   

   A. 13
   

   B. 11
   

   C. 10
   

   D. 21
   

   E. 20
   

   PEMBAHASAN :
   

   u₂ = 16
   

   u₅ = 16 + 1 = 17
   

   u₃ = 14
   

   u₈ = 14 + 1 = 15
   

   u₁ = 18
   

   u₄ = 18 + 1 = 19
   

   u₇ = 19 + 1 = 20
   

   JAWABAN : E
   

7. 22 26 23 27 24 …
   

   A. 26
   

   B. 27
   

   C. 28
   

   D. 31
   

   E. 22
   

   PEMBAHASAN :
   

   u₂ = 26
   

   u₄ = 26 + 1 = 27
   

   u₆ = 27 + 1 = 28
   

   JAWABAN : C
   

8. 80 60 41 24 10 …
   

   A. 8
   

   B. 6
   

   C. 4
   

   D. 2
   

   E. 0
   

   PEMBAHASAN :
   

   u₁ = 80
   

   u₂ = 80 – 20 = 60
   

   u₃ = 60 – 19 = 41
   

   u₄ = 41 – 17 = 24
   

   u₅ = 24 – 14 = 10
   

   u₆ = 10 – 10 = 0
   

   JAWABAN : E
   

9. 18 16 0 19 17 0 … …
   

   A. 20 18
   

   B. 22 20
   

   C. 18 20
   

   D. 21 18
   

   E. 23 19
   

   PEMBAHASAN :
   

   u₁ = 18
   

   u₄ = 18 + 1 = 19
   

   u₇ = 19 + 1 = 20
   

   u₂ = 16
   

   u₄ = 16 + 1 = 17
   

   u₆ = 17 + 1 = 18
   

   JAWABAN : C
   

10. 33 7 10 32 8 12 31 … …
    

    A. 9 30
    

    B. 11 30
    

    C. 10 30
    

    D. 9 14
    

    E. 9 13
    

    PEMBAHASAN :
    

    u₁ = 33
    

    u₄ = 33 – 1 = 32
    

    u₇ = 32 – 1 = 31
    

    u₂ = 7
    

    u₅ = 7 + 1 = 8
    

    u₈ = 8 + 1 = 9
    

    u₃ = 10
    

    u₆ = 10 + 2 = 12
    

    u₉ = 12 + 2 = 14
    

    JAWABAN : D
    

11. 11 5 6 7 14 7 8 9 17 9 10 … …
    

    A. 11 19
    

    B. 11 20
    

    C. 11 18
    

    D. 15 20
    

    E. 15 19
    

    PEMBAHASAN :
    

    u₁ = 11
    

    u₅ = 11 + 3 = 14
    

    u₉ = 14 + 3 = 17
    

    u₁₃ = 17 + 3 = 20
    

    u₂ = 5
    

    u₃ = 5 + 1 = 6
    

    u₄ = 6 + 1 = 7
    

    u₆ = 7
    

    u₇ = 7 + 1 = 8
    

    u₈ = 8 + 1 = 9
    

    u₁₀ = 9
    

    u₁₁ = 9 + 1 = 10
    

    u₁₂ = 10 + 1 = 11
    

    JAWABAN : B
    

12. 70 51 69 56 68 61 … …
    

    A. 57 66
    

    B. 67 66
    

    C. 68 66
    

    D. 67 65
    

    E. 67 67
    

    PEMBAHASAN :
    

    u₁ = 70
    

    u₃ = 70 – 1 = 69
    

    u₅ = 69 – 1 = 68
    

    u₇ = 68 – 1 = 67
    

    u₂ = 51
    

    u₄ = 51 + 5 = 56
    

    u₆ = 56 + 5 = 61
    

    u₈ = 61 + 5 = 66
    

    JAWABAN : B
    

13. 50 100 67 200 85 400 104 700 …
    

    A. 120
    

    B. 800
    

    C. 1000
    

    D. 124
    

    E. 123
    

    PEMBAHASAN :
    

    u₁ = 50
    

    u₃ = 50 + 17 = 67
    

    u₅ = 67 + 18 = 85
    

    u₇ = 85 + 19 = 104
    

    u₉ = 104 + 20 = 124
    

    JAWABAN : D
    

14. 3 8 15 20 27 …
    

    A. 30
    

    B. 33
    

    C. 35
    

    D. 34
    

    E. 32
    

    PEMBAHASAN :
    

    u₁ = 3
    

    u₂ = 3 + 5 = 8
    

    u₃ = 8 + 7 = 15
    

    u₄ = 15 + 5 = 20
    

    u₅ = 20 + 7 = 27
    

    u₆ = 27 + 5 = 32
    

    JAWABAN : E
    

15. 44 34 15 43 33 15 42 32 15 … …
    

    A. 41 30
    

    B. 41 31
    

    C. 31 41
    

    D. 30 40
    

    E. 30 42
    

    PEMBAHASAN :
    

    u₁ = 44
    

    u₄ = 44 – 1 = 43
    

    u₇ = 43 – 1 = 42
    

    u₁₀ = 42 – 1 = 41
    

    u₂ = 34
    

    u₅ = 34 – 1 = 33
    

    u₈ = 33 – 1 = 32
    

    u₁₁ = 32 – 1 = 31
    

    JAWABAN : B
    

Soal lengkap bisa dilihat di Tes Potensi Akademik

NOTE : silahkan dikoreksi dan berikan komentar jika ada kesalahan atau masih ada keambiguan baik dalam soal maupun penyelesaian soal ini.