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Gbotty
Questions and answers by visitors named
Gbotty
Questions (11)
Five cards are lettered A B C D E.Three cards are chosen at random, one after the other, without replacement and are placed in
4 answers
1,323 views
Show that the points (20°N,20°E) and (60°N,160°W) lie on the same great circle.Find their great circle distance apart.
7 answers
2,305 views
Three circles centre A,B and C with radii 4cm, 3cm, 2cm, respectively, touch one another externally.Calculate the lengths of the
5 answers
885 views
Three circles touch one another externally.Their centres form A triangle with sides 10cm,9cm and 7cm.Find the radii of the
2 answers
746 views
The circle touches the sides of triangle ABC at X,Y and Z. If BC=11cm, CA=10cm and AB=9cm,find AY and BX
1 answer
448 views
A circle is drawn inside a triangle ABC to touch the sides BC,CA and AB at P,Q and R respectively.if A=56° and B=68°, find the
2 answers
579 views
A commitee consists of six men and four women.A randomly chosen subcommittee is made up of three of the committee members.What
2 answers
961 views
It is assumed that when children are born they are equally likely to be boys or girls.What is the probability that a family of
3 answers
1,601 views
Five cards are lettered A B C D R.Three cards are chosen at random, one after the other, without replacement and are placed in
2 answers
516 views
A card is chosen from a pack of playing cards then returned to the pack.A second card is chosen.What is the probability that
3 answers
685 views
In a large crowd,there are three times as many men as women.Three people are chosen at random.Assuming that there are so many
3 answers
696 views
