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Find the number of common terms to the t...

Find the number of common terms to the two sequences 17,21,25,...,417 and 16,21,26,...,466.

A

19

B

20

C

21

D

84

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The correct Answer is:
B
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QUANTUM CAT-SEQUENCE, SERIES & PROGRESSIONS-QUESTION BANK
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  12. What is the sum of 100 terms of the series 1-2+3-4+5-6+…. ?

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