In the sequence 5, 1, 4, 7, 3, 9, 8, 5, 7, 2, | vedclass

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(D) We need to find odd numbers that satisfy the pattern: (Even number) - (Odd number) - (Even number).Let us examine the sequence: $5, 1, 4, 7, 3, 9,

Vedclass · Accepted Answer

$4$

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(D) We need to find odd numbers that satisfy the pattern: (Even number) - (Odd number) - (Even number).Let us examine the sequence: $5, 1, 4, 7, 3, 9, 8, 5, 7, 2, 6, 3, 1, 5, 8, 6, 3, 8, 5, 2, 2, 4, 3, 4, 9, 6$.$1$. In $4, 7, 3$,the number $7$ is preceded by $4$ (even) and followed by $3$ (odd). (Does not fit)$2$. In $8, 5, 7$,the number $5$ is preceded by $8$ (even) and followed by $7$ (odd). (Does not fit)$3$. In $2, 6, 3$,the number $3$ is preceded by $6$ (even) and followed by $1$ (odd). (Does not fit)$4$. In $6, 3, 1$,the number $3$ is preceded by $6$ (even) and followed by $1$ (odd). (Does not fit)$5$. In $8, 6, 3$,the number $3$ is preceded by $6$ (even) and followed by $8$ (even). (Fits: $6, 3, 8$)$6$. In $6, 3, 8$,the number $3$ is preceded by $6$ (even) and followed by $8$ (even). (Fits: $6, 3, 8$)$7$. In $8, 5, 2$,the number $5$ is preceded by $8$ (even) and followed by $2$ (even). (Fits: $8, 5, 2$)$8$. In $4, 3, 4$,the number $3$ is preceded by $4$ (even) and followed by $4$ (even). (Fits: $4, 3, 4$)There are $4$ such odd numbers: $3$ (in $6, 3, 8$),$3$ (in $6, 3, 8$),$5$ (in $8, 5, 2$),and $3$ (in $4, 3, 4$).

In the sequence $5, 1, 4, 7, 3, 9, 8, 5, 7, 2, 6, 3, 1, 5, 8, 6, 3, 8, 5, 2, 2, 4, 3, 4, 9, 6$,how many odd numbers are there which are immediately preceded and also immediately followed by an even number?

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