Elitmus Exam Category

in a triangle ABC, 5 points are on AB, 6 points on BC and 3 points on CA, (none of these points being vertex), how many triangles can be made using these points ???

op: 90, 333 , 328, 300

Read Solution (Total 3)

14c3 - (5c3 + 6c3 + 3c3)
364-31 = 333 ans
9 years agoHelpfull: Yes(27) No(0)

90 i think
5C3+6C3+3C3=90
9 years agoHelpfull: Yes(0) No(18)
Ans =333
14c3-(5c3+6c3+3c3)
364-31=333
8 years agoHelpfull: Yes(0) No(0)

Elitmus Other Question

If i answer 3 right question and 2 wrong question in a perticular section is it the marks is deducted for those 2 wrong answers.
Because i heard that negetive marking will count after 4 wrong ansewrs. you have 158 one rupee coins. you have to allocate them into a number of bags such that any amounts b/n 1 and 158 can be given by handing a certain number of bags without opening them. what is the MINIMUM number of bags required??????

op: 11,12,13,14, none