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anant kajle

· started a discussion

· 1 Months ago

wrong answer given (Question: 189645.0 )

answer should be 5 and not 6 because at the last "4" the sequence ends.. so we can't consider it for the complete solution... by your logic even the 1st 4 can be considered and then asnwer should be 7

Question:
How many 4's in the series are preceded by a prime number but not followed by a prime number?


4, 1, 4, 1, 5, 4, 2, 6, 4, 1 8, 3, 4, 9, 2, 4, 8, 3, 4, 8, 2, 8, 4, 5, 4, 8, 7, 4, 6, 4, 5, 4

Options:
A) 3
B) 4
C) 5
D) 6
Solution:
Ans: (d) 349, 248, 348, 548, 746 and 54

ANKIT KUMAR

· commented

· 1 Months ago

1 is aslo not composite number

ANKIT KUMAR

· commented

· 1 Months ago

first 4 cant be consider because 1 is not prime number
but logic regarding last 4 is not right as u had said
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