The fourth composite number in the A.P. 5, 7, | vedclass

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(B) The given $A.P.$ is $5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, \ldots$To find the composite numbers in this sequence,we check each term:$5$: Prime$

Vedclass · Accepted Answer

$25$

Vedclass · Answer

(B) The given $A.P.$ is $5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, \ldots$To find the composite numbers in this sequence,we check each term:$5$: Prime$7$: Prime$9$: Composite $(3 	imes 3)$$11$: Prime$13$: Prime$15$: Composite $(3 	imes 5)$$17$: Prime$19$: Prime$21$: Composite $(3 	imes 7)$$23$: Prime$25$: Composite $(5 	imes 5)$The composite numbers in the sequence are $9, 15, 21, 25, \ldots$The first composite number is $9$.The second composite number is $15$.The third composite number is $21$.The fourth composite number is $25$.Therefore,the correct option is $B$.

The fourth composite number in the $A.P.$ $5, 7, 9, 11, \ldots$ is......

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