##### Number System-CAT
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# The number of common terms in the two sequences 17, 21, 25, …, 417 and 16, 21, 26, …, 466 is (2008)

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### Solution:

#### Arithmetic Sequence /Arithmetic Progression (A.P)

##### ${ a }_{ n }={ a }_{ 1 }+(n-1)d$
###### Hence the option (b) is correct and the answer is 20.

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