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Tough Puzzles & Brain Teasers
Puzzles on logic and mathematics that will make you scratch your head.
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Aswini Vi
Aswini Vi
Computer Science
15 Jan 2019

Which completes the series 11,14,8,17,?

Find the next number in the following series 11,14,8,17,?

3mos ago

Let the series be r(1 to n) with r(1)=11.

The nth term appears to be

r(n)=r(n-1)+((-1)^n)((n-1)*3)

The next term is the 5th one. So

r(5)=17+((-1)^5(4*3))=17-12=5

2mos ago

Ans : 5

11 (+3) 14 (-6) 8 (+9) 17 (-12) 5

Where 3,6,9,12 are multiples of 3 and it gets as +,-,+,-,....

Kunal Gokhe
Kunal Gokhe
Mechanical
2mos ago

Ans is 5

Vijay Khatri
Vijay Khatri
Computer Science
2mos ago

The series goes into two way, One is the table of 3 and another one is +vs, -vs, +ve....

Then

11,    14,     8,      17,      5

    +3     -6    +9      -12

By above-given series, you will get your answer.