Question

10, 11, 13, 21, 69, ?

a) 384

b) 490

c) 453

d) 390

e) None of The Above ​

Answer 1

Answer:

option (c) is right:--

Step-by-step explanation:

I hopes its helps u.

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Answer 2

Answer:

Acc to me,

453 should be the answer

Step-by-step explanation:

Notice the difference between to neighbouring terms

11–10=1

13–11= 1 ×2=2(1 is the previous diff.)

21–13= 2 ×4=8(2 is the previous diff.)

69–21= 8 ×6=48(8 is the previous diff.)

X-69 = 48 ×8=384(48 is the previous diff.)

X=453

We keep multiplying 2 then 4 then 6 then 8 and so on with previous diff. to get next diff.

(Previous diff. in numbers)×2/4/6/8….=Next diff. in numbers

HOPE IT WILL HELP UH.