Uma wrote:
Hi
Pls help for this question
What are the next two numbers of this squence?
1, 1, 2, 4, 6, 12, 15, ____, _____
(a) 33, 31
(b) 16, 31
(c) 33, 16
(d) 16, 33
Thanks
Rds
Uma
Between DS1 and me, we deduced that;
Sequence 1 goes up in Square numbers...
1, 2, 6, 15, 31 difference between each = 1, 4, 9, 16 (All Square numbers)
1, 1,
2, 4,
6, 12,
15, ____, _____
The sum of two consecutive numbers in the first sequence adds up to the difference of the two consecutive numbers in the second sequence.
1+
2 = 3 difference between 1 and 4=3
2+
6 = 8 difference between 4 and 12=8
6+
15 =21 difference between 12 and
33=21
therefore answer is
(a) 33, 31
BW