Some birds settled on the branches of a tree. First,they sat one to a branch and there was one bird extra.Next they sat two to a branch and there was one branch extra.How many branches are there?
a]5
b]4
c]3
d]6
e]7
the answer is c i.e 3
this can be solved by trail and error method ,,,but i can't figure out the best way to solve this!!!! when given bigger numbers in the choices.
a]5
b]4
c]3
d]6
e]7
the answer is c i.e 3
this can be solved by trail and error method ,,,but i can't figure out the best way to solve this!!!! when given bigger numbers in the choices.
