Which one among the following rivers is the longest?
- (a)Amazon
- (b)Amur
- (c)Congo
- (d)Lena
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Official answer(a) Amazon
Official answer(a) Amazon
Official answer(b) 1 and 3 only
Official answer(c) Only four
Official answer(b) Lake Faguibine
Official answer(c) 3 and 4 only
Official answer(a) 1 only
Official answer(a) Sumatra