Ritesh N Das
from
Adamas International School, Kolkata
Subject :IMO Class : Class 6
What is the number in the series:-
17 ,_____ ,23.
Ans 4:
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Ans 10:
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Ritesh N Das
from
Adamas International School, Kolkata
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)