# mathsphy Maths NO MORE scary

S No. Topic Video
11 "Out of 18 points in a plane, no three are in the same line except five points which are collinear. Find the number of lines that can be formed joining the point. "
12 "We wish to select 6 persons from 8, but if the person A is chosen, then B must be chosen. In how many ways can selections be made? "
13 "Find the number of permutations of n distinct things taken r together, in which 3 particular things must occur together. "
14 "A convex polygon has 44 diagonals. Find the number of its sides. "
15 "A bag contains six white marbles and five red marbles. Find the number of ways in which four marbles can be drawn from the bag if "
16 n is equal to ??
17 "A five digit number divisible by 3 is to be formed using the numbers 0, 1, 2, 3, 4 and 5 without repetitions. The total number of ways this can be done is "
18 "The number of 5-digit telephone numbers having at least one of their digits repeated is "
19 "The number of words which can be formed out of the letters of the word ARTICLE, so that vowels occupy the even place is "
20 "Given 5 different green dyes, four different blue dyes and three different red dyes, the number of combinations of dyes which can be chosen taking at least one green and one blue dye is "
Topic/Video

11 "Out of 18 points in a plane, no three are in the same line except five points which are collinear. Find the number of lines that can be formed joining the point. "

12 "We wish to select 6 persons from 8, but if the person A is chosen, then B must be chosen. In how many ways can selections be made? "

13 "Find the number of permutations of n distinct things taken r together, in which 3 particular things must occur together. "

14 "A convex polygon has 44 diagonals. Find the number of its sides. "

15 "A bag contains six white marbles and five red marbles. Find the number of ways in which four marbles can be drawn from the bag if "

16 n is equal to ??

17 "A five digit number divisible by 3 is to be formed using the numbers 0, 1, 2, 3, 4 and 5 without repetitions. The total number of ways this can be done is "

18 "The number of 5-digit telephone numbers having at least one of their digits repeated is "

19 "The number of words which can be formed out of the letters of the word ARTICLE, so that vowels occupy the even place is "

20 "Given 5 different green dyes, four different blue dyes and three different red dyes, the number of combinations of dyes which can be chosen taking at least one green and one blue dye is "