Directions:(1-5) What should come in place of the question mark (?) in the following number series?

1. 54, 105, 174, 261, ?

Ans: 3
The pattern is 72+5=54, 102+5=105, 132+5=174, 162+5=261, 192+5=366

 

2. 32, 48, 120, 420, ?, 10395

Ans: 4
The pattern is:
32×1.5 = 48, 48×2.5=120, 120×3.5=420, 420×4.5=1890, 1890×5.5=10395

 

3. 647, 168, 48, ?, 6

Ans: 2
The next term is the product of digits of the previous terms.
6x4x7=168, 1x6x8=48, 4×8=32, 3×2=6

 

4. 13, 16, 24, 39, 63, 98, ?

Ans: 5
The pattern is:
13 + (22 – 1) = 16, 16 + (32 – 1) = 24, 24 + (42 – 1) = 39, 39 + (52 – 1) = 63, 63 + (62 – 1) = 98, 98 + (72 – 1) = 146

 

5. 362, 183, 64, 20, 9, ?

Ans: 5
The pattern is: 362÷2+2=183, 183÷3+3=64, 64÷4+4=20, 20÷5+5=9, 9÷6+6=7.5

 

Directions:(6-10) Find the next term in the series.

6. 3, 9, 36, 180, 1080, ?

Ans: 5
The pattern is as follows:
3 x 3 = 9
9 x 4 = 36
36 x 5 = 180
180 x 6 = 1080
1080 x 7 = 7560

 

7. 46656, 7776, 1296, 216, 36, ?

Ans: 5
The pattern is as follows:
3 x 3 = 9
9 x 4 = 36
36 x 5 = 180
180 x 6 = 1080
1080 x 7 = 7560

 

8. 5718, 5618, 5474, 5278, 5022, ?

Ans: 2
The pattern is as follows:
5718 – 102 = 5618
5618 – 122 = 5474
5474 – 142 = 5278
5278 – 162 = 5022
5022 – 182 = 4698

 

9. 66, 66, 132, 198, 330, 528, ?

Ans: 5
The pattern is as follows:
66 + 66 = 132
66 + 132 = 198
132 + 198 = 330
198 + 330 = 528
330 + 528 = 858

 

10. 748, 759, 768, 775, 780, ?

Ans: 3
The pattern is as follows:
34 x 22 = 748
33 x 23 = 759
32 x 24 = 768
31 x 25 = 775
30 x 26 = 780
29 x 27 = 783

 

Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

133 thoughts on “Number Series”

  5. Marcos

    You actually make it seem really easy with your presentation but I find this topic to be actually
    one thing which I believe I’d never understand. It seems
    too complicated and very vast for me. I’m looking ahead
    for your subsequent submit, I’ll attempt to get the cling of it!
    Lista escape roomów

  9. Apolonia Ege

    Hello I am so grateful I found your website, I really found you by mistake, while I was browsing on Bing for something else, Anyhow I am here now and would just like to say thanks for a remarkable post and a all round interesting blog (I also love the theme/design), I don’t have time to read it all at the minute but I have saved it and also included your RSS feeds, so when I have time I will be back to read more, Please do keep up the excellent work.

  60. Ngzadszk

    Explore the ranked best online casinos of 2025. Compare bonuses, game selections, and trustworthiness of top platforms for secure and rewarding gameplaycasino bonus.

  61. fliet

    Happy to join conversations, share experiences, and learn something new as I go.
    I like understanding different opinions and contributing whenever I can. Happy to hear different experiences and connecting with others.
    That’s my site-https://automisto24.com.ua/

  121. RichardGrart

    ¡Saludos, seguidores de la diversión !
    Mejores casinos online extranjeros 2025 en espaГ±ol – п»їhttps://casinosextranjerosenespana.es/ casinos extranjeros
    ¡Que vivas increíbles victorias épicas !

  126. Oscardon

    ¡Saludos, estrategas del desafío !
    Mejores promociones en casinos fuera de EspaГ±a – п»їhttps://casinosonlinefueraespanol.xyz/ casino online fuera de espaГ±a
    ¡Que disfrutes de triunfos épicos !

  129. Douglasvok

    ¡Hola, descubridores de oportunidades únicas!
    Casinos fuera de EspaГ±a para mГіvil y escritorio – п»їhttps://casinosonlinefueradeespanol.xyz/ casino por fuera
    ¡Que disfrutes de asombrosas rondas vibrantes !

  132. Franktug

    ¡Hola, exploradores de oportunidades !
    Casino sin licencia espaГ±ola que acepta Ethereum – п»їhttps://casinosinlicenciaespana.xyz/ casino sin licencia espaГ±a
    ¡Que vivas increíbles instantes únicos !

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top