How many 5s are there in the following sequence which are immediately followed by 3 but not immediately preceded by 7? 8 9 5 3 2 5 3 8 5 5 6 8 7 3 3 5 7 7 5 3 6 5 3 3 5 7 3 8
A
One
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B
Two
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C
Three
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D
Four
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Solution
The correct option is C Three The numbers satisfying the given conditions can be seen as follow ; 8 9 5 3 2 5 3 8 5 5 6 8 7 3 3 5 7 7 5 3 6 5 3 3 5 7 3 8 Clearly there are three such numbers.