by shivamtripathi22 | Apr 19, 2022 | Uncategorized
(Q). Find the number of diagonals of a polygon with 12 sides.Solution:-¹²C₂ – 12= 66 – 12= 54 ...
by shivamtripathi22 | Apr 19, 2022 | Uncategorized
(Q). How many distinct lines can be drawn through 10 points, 5 of which are on a straight line & remaining 5 are on other straight line which is parallel to the first straight line?Solution:-¹⁰C₂ – ⁵C₂ – ⁵C₂ + 1 + 1= 45 – 10 – 10 + 2= 27 ...
by shivamtripathi22 | Apr 19, 2022 | Uncategorized
(Q). How many straight lines can be drawn through 10 points, exactly 3 of which are collinear?Solution:-Number of straight lines= ¹⁰C₂ – ³C₂ + 1= 45 – 3 + 1 = 43 ...
by shivamtripathi22 | Apr 19, 2022 | Uncategorized
(Q). How many distinct lines can be drawn through 10 points, no three of which are collinear?Solution:-Number of distinct straight lines= ¹⁰C₂= 45 ...
by shivamtripathi22 | Apr 10, 2022 | Uncategorized
(Q). In an election 3 person are to be selected from 6 candidates. A voter can cast any number of votes but not more than the candidates to be elected. In how many ways can he cast his vote?Solution:-A voter can vote for either 1 or 2 or 3 contestants.Hence required...
