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Anjali Sharma

· started a discussion

· 1 Months ago

what about the last 4? (Question: 189645.0 )

last 4 would be counted too...as its not followed by a prime no.

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

Knowledge Expert

· commented

· 1 Months ago

Dear Student,

Last 4 also should be cobsidered as it is precebded by a prime number and not followed by any number/prime number. We have resolved it.

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