21 November 2016

 

There are 'n' number of students in a class. They are standing for a group photograph in such a way that the number of students in the first row is same as the total number of rows. Further, from the second row onwards, the number of students in any row is three more than the number of students in the preceding row. Which of the following cannot be the value of 'n'?

Option 1->18

Option 2->55

Option 3->30

Option 4->34

 

Solution:

Correct solution received from :

1. Tarun Bhomra

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