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Find the 7th term of the sequence: 2, 5, 10, 17, 26,...

Mathematics
WAEC 2015

Find the 7th term of the sequence: 2, 5, 10, 17, 26,...

  • A. 37
  • B. 48
  • C. 50
  • D. 63
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Correct Answer: Option C
Explanation

GIVEN: 2, 5, 10, 17, 26,.

The numbers are increasing by odd value.

1st term = 2

2nd term = 5

3rd term = 10

4th term = 17

5th term = 26

6th term = 37

7th term = 50

Always add 2 to the difference between the two preceding numbers and add this to the later number to get the next term.


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