Question

Which number will come next in the following series?
3, 8, 5, 7, 8, 5, 12
(A) 2
(B) 3
(C) 4
(D) 1
(E) None of these
​

Answer 1

Answer:

I think so 4

Explanation:

The pattern is little bit confused pattern but i.worked through and got 4 as answer

Answer 2

$\Large\underline{\boxed{\tt{\pink{Question:-}}}}$

Which number will come next in the following series?

SERIES: 3, 8, 5, 7, 8, 5, 12, __

$\Large\underline{\boxed{\tt{\pink{Answer:-}}}}$

• Number 2. (Option - A)

Explanation:-

In the given series, we shall group the numbers into two groups.

[Kindly refer to the attachment for clarity on grouping]

Group - 1:- 3, 5, 8 and 12

Group - 2:- 8, 7, and 5

Group - 1:

Here, the numbers are following the order (a+2), (b+3), (c+4) ...

• 3+2=5
• 5+3=8
• 8+4=12

Group - 2:

And here, the numbers are following the order (a-1), (b-2), (c-3) ...

• 8-1=7
• 7-2=5

According to the question, we've to find the next number in group 2 i.e., the number after 5 (group-wise).

Above, 2 got subtracted from 7, so in the next number 3 has to be subtracted.

$\red\implies$3 has to be subtracted from the number 5

$\large{\boxed{\tt{5-3=2}}}$

Hence, the number is 2.

____________________________________