Latest Bank Exam Aptitude Question SOLUTION: 4 6 9 13.5 20.25 30.375 ???

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(#M40008692) BANK EXAM question Find next value Keep an EYE

4 6 9 13.5 20.25 30.375 ???

Asked In Bank Exam Vignesh (12 years ago)

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Sundar Kumar  (9 years ago)

4*1.5=6,
6*1.5=9,
9*1.5=13.5,
13.5*1.5=20.25 ,
20.25 *1.5 =30.375,
hence it will give 30.375*1.5= 45.5625
Answer: Option: 1) 45.5625

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Vadivelan M  (12 years ago)

45.5625

Explanation:
4 + 2 = 6

6 + 3 = 9
here 3 is (3/2)*(2) = 3

9 + 4.5 = 13.5
here 4.5 is (3/2)*(3) = 4.5

13.5 + 6.75 = 20.25
here 6.75 is (3/2)*(4.5) = 6.75

20.25 + 10.125 = 30.375
here 10.125 is (3/2)*(6.75) = 10.125

30.375 + 15.1875 = 45.5625
here 15.1875 is (3/2)*(10.125) = 15.1875

Hence (n-1)th number + (3/2)*[(n-1)th number - (n-2)th number] = nth number

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