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Subject :IMO    Class : Class 6
What is the number in the series:- 17 ,_____ ,23.

Ans 1:

Class : Class 6
20.

Ans 2:

Class : Class 6
20

Ans 3:

Class : Class 6
the answer :-20

Ans 4:

Class : Class 6
It is 19 or 20

Ans 5:

Class : Class 6
20

Ans 6:

Class : Class 7
20

Ans 7:

Class : Class 8
20

Ans 8:

Class : Class 7
20

Ans 9:

Class : Class 8
20

Ans 10:

Class : Class 9
a) 19 as 17 is a prime no. 23 is a prime no. 19 is a prime no. b) 20 as 17,20,23 (difference of 3)

Ans 11:

Class : Class 7
20

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