Advertisements
Advertisements
प्रश्न
Choose the correct alternative:
The number of rectangles that a chessboard has ______
पर्याय
81
99
1296
6561
उत्तर
1296
APPEARS IN
संबंधित प्रश्न
Verify that 8C4 + 8C3 = 9C4.
How many triangles can be formed by joining the vertices of a hexagon?
Out of 7 consonants and 4 vowels, how many words of 3 consonants and 2 vowels can be formed?
If a polygon has 44 diagonals, find the number of its sides.
If nC3 = nC2 then the value of nC4 is:
The number of 3 letter words that can be formed from the letters of the word ‘NUMBER’ when the repetition is allowed are:
If nPr = 720 and nCr = 120, find n, r
Prove that 15C3 + 2 × 15C4 + 15C5 = 17C5
Prove that `""^(2"n")"C"_"n" = (2^"n" xx 1 xx 3 xx ... (2"n" - 1))/("n"!)`
How many chords can be drawn through 20 points on a circle?
A trust has 25 members. How many ways 3 officers can be selected?
A trust has 25 members. In how many ways can a President, Vice President and a Secretary be selected?
How many different selections of 5 books can be made from 12 different books if, Two particular books are always selected?
Determine the number of 5 card combinations out of a deck of 52 cards if there is exactly three aces in each combination
A committee of 7 peoples has to be formed from 8 men and 4 women. In how many ways can this be done when the committee consists of exactly 3 women?
Find the number of strings of 4 letters that can be formed with the letters of the word EXAMINATION?
How many triangles can be formed by joining 15 points on the plane, in which no line joining any three points?
How many triangles can be formed by 15 points, in which 7 of them lie on one line and the remaining 8 on another parallel line?
There are 11 points in a plane. No three of these lie in the same straight line except 4 points which are collinear. Find the number of triangles that can be formed for which the points are their vertices?
Choose the correct alternative:
`""^(("n" - 1))"C"_"r" + ""^(("n" - 1))"C"_(("r" - 1))` is
