Find the next no.

Level pending

1,3,7,15,_ Find the next no.

35 31 30 32

Akshit Agarwal by Akshit Agarwal , 23, India

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4 solutions

Harsh Depal
May 26, 2014

General Term (Tn)=2^n-1

5 Helpful 0 Interesting 0 Brilliant 0 Confused

@Harsh Depal Wow Machaya! Please explain further.

Deepak Kumaar - 4 years, 1 month ago
Hassan Salim
Apr 24, 2014

the next no is 2*(last no )+1

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Lalita Arun Singh
Mar 11, 2014

1 2+1=3 3 2+1=7 7 2+1=15 15 2+1=31

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Aditya Anilkumar
Mar 10, 2014

The differences b/w the numbers is in a GP............. So just find out what number should be added to 15. The number to be added to 15 would be 16 and hence giving the answer as 31

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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