Q: 45 (CDS-I/2018)

Consider the following tributaries of river Ganga :
1. Gandak
2. Kosi
3. Ghaghara
4. Gomti
Which one of the following is the correct order of the above rivers from east to west?
question_year: 
2018
question_exam: 
CDS-I
stats: 
0,64,128,88,64,24,16