Question

4,6,10,18,34,(?)
What number should replace "(?)"​

Answer 1

Answer:

66

Step-by-step explanation:

Difference between 4 and 6 =2

Difference between 6 and 10=4

Difference between 10 and 18=8

Difference between 18 and 34=16

Therefore, difference between 34 and ? should be double of 16, hence we should add 32 to 34 to get the answer which is 66

Answer 2

before that. lets see how did 4 change to 6,10,18 and 34.

so 4→6:-

so if we add 2 to 4 it becomes 6. so to 4 added 2 becomes 6

now 6→10:-

6+x=10

x=4

now 10→18:-

10+x=18

x=8.

now 18→34:-

18+x=34

x=16

in this you have seen each solution of x is multiplied by two from first.

so the last solution was 16, so the answer for (?) is 16×2+34=x

↑↑ x is (?)

so 16×2 is 32.

32+34=x

so x=66

$\huge \blue{(?) = 66}$