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

Ans 1:

soham mandal from bolpur high school, bolpur
Class : Class 6
20

Ans 2:

shashanka from dps, duliajan
Class : Class 7
20

Ans 3:

Swayam Duhan from Modern Delhi Public School, Faridabad
Class : Class 6
20

Ans 4:

Lakshya Garg from DMI, Meerut
Class : Class 6
20.

Ans 5:

Shraddha from St.Francis school, Ghaziabad
Class : Class 8
20

Ans 6:

deepanshu from Deens Acadamy, Bengaluru
Class : Class 6
the answer :-20

Ans 7:

Aditya Mishra from Sri Kumaran Children's Academy, Bengaluru
Class : Class 6
It is 19 or 20

Ans 8:

Dipanshu Bhat from K.C. International School, Jammu
Class : Class 7
20

Ans 9:

VANSH GUPTA from MDS SCHOOL , SEC -3, UDAIPUR, Udaipur
Class : Class 7
20

Ans 10:

abhinav from fitjee world school, Hyderabad
Class : Class 8
20

Ans 11:

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)

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