Question

28, 33, 31, 36, ?, 39
A.32
B.34
C.38
D.40

Answer 1

The Answer is...

B.34

Series like +5,-2,+5,-2.......

28 +5=33
33 -2=31
31 +5=36
36 -2=34


28,33,31,36,?,39
28 31 ? = 28,28+3,28+6=28,31,34
33 36 39 = 33,33+3,33+6=33,36,39 
(or)
28,28+5=33,33-2=31,31+5=36,36-2=34,34+5=39

Answer 2

Answer:

$\boxed{Option\:B}$

Step-by-step explanation:

28............   First add 5

28 + 5 ==> 33

33................. Then subtract 2

33 - 2 ==> 31

31.............. Again add 5

36..................Now subtract 2:

36 - 2 = 34

Hence your answer is 34.

In the series , first we add 5 then the next term we subtract 2.....

For the first term as x:

x , x + 5 , x + 5 - 2 , x + 5 - 2 + 5

==>x , x + 5 , x + 3 , x + 8 ......... and so on

Put x as 28

28 , 33 , 31 , 36, 34  ,............................

Hope you understood me :-)

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