Question

. Look carefully for the pattern, and then choose which pair of numbers
comes next.
13 29 15 26 17 23 19
a) 21 23
b) 20 21
c) 20 17
d) 25 27

Answer 1

b)20,21 is correct answer

the odd positions form an arithmetic progression where common difference is plus to show the odd digit should be 21 and in the even digit it forms an ap in which common difference is -3 show the even digit should be 20.

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Answer 2

Answer:

b) 20 , 21

Step-by-step explanation:

13 29 15 26 17 23 19 20 21

In 13 ,15 , 17 and 19 there is 2 number difference so next is 21

In 29 , 26 and 23 there is 3 number difference so next is 20