WAEC - Mathematics (2015 - No. 5)
Find the 7th term of the sequence: 2, 5, 10, 17, 26,...
37
48
50
63
Giải thích
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.