Pregunta 1
Pregunta
If you join all the vertices of a heptagon, how many quadrilaterals will you get?
Pregunta 2
Pregunta
A teacher prepares a test. She gives 5 objective type questions out of which 4 have to be answered. Find the total ways in which they can be answered if the first 2 questions have 3 choices and the last 3 have 4 choices.
Pregunta 3
Pregunta
In a school 5 colors are allotted to each house. If the flag of Tagore House has to be a sequence of three blocks of different colors, then how many flags can they choose from?
Pregunta 4
Pregunta
How many five digit numbers can be formed using the digits 0, 2, 3,4and 5, when repetition is allowed such that the number formed is divisible by 2 or 5 or both?
Pregunta 5
Pregunta
Four persons enter the lift of a seven story building at the ground floor. In how many ways can they get out of the lift on any floor other than the ground floor?
Pregunta 6
Pregunta
Ten different letters of an alphabet are given. 2 of these letters followed by 2 digits are used to number the products of a company. In haw many ways can the products be numbered?
Respuesta
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52040
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8100
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5040
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1000
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4000
Pregunta 7
Pregunta
If P(2n+1,n-1):P(2n-1,n) = 3:5, n must equal 6
Pregunta 8
Pregunta
A polygon has 20 diagonals. How many sides does it have?
Pregunta 9
Pregunta
A box contains 5 red and 4 blue balls. In how many ways can 4 balls be chosen such that there are at most 3 balls of each color?
Pregunta 10
Pregunta
Four students have to be chosen 2 girls as the captain and vice-captain and 2 boys as captain and vice-captain of the school. There are 15 eligible girls and 12 eligible boys. In how many ways can they be chosen if Sunita is sure to be the captain?