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22 Oct 2018 : Series

What is the next term of following series:
3, 4, 6, 8, 12, 14, 18, ?

OPtion

1) 19
2) 18
3) 20
4) 21
5) 23
6) 22
7) 24
8) 25
9) 26
10) None of these

Solution

nth term = n + 1
Where n is prime number such as 2, 3, 5, 7, 11, 13, 17, 19 and so on
So next term = 19+1 = 20

Option 3)

Correct Option: 3 Best Solution (5)

Best user's solution

ARINJOY GHOSH

tn=nth prime+1
t1=2+1=3
t2=3+1=4
t3=5+1=6
t4=7+1=8
t5=11+1=12
t6=13+1=14
t7=17+1=18
t8=19+1=20
Ans. option (3)

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Shanjay Sundar D

actually its solution is all prime numbers +1 is the next number
2+1=3
3+1=4
5+1=6
7+1=8
11+1=12
13+1=14
17+1=18
19+1=20
so my option is 3

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SAYAN CHATTERJEE

the series is nth prime +1
so, the next number is 19+1=20
Option 3.

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Tresa Naomi

1 +2=3
1 +3=4
1 +5=6
1 +7=8
1 +11=12
1 +13=14
1 +17=18
the first n primes numbers are added with 1, so next prime number will be 19. hence
1 +19=20

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Kariamal

All prime number +1 be the next number
2+1=3
3+1=4
5+1=6
7+1=8
11+1=12
13+1=14
17+1=18
19+1=20....Option(3)

Is this solution helpfull? Yes | No