Mathematics MCQs

Page No. 45

The number of ways in which six boys and six girls can be seated in a row for a photograph so that no two girls sit together is_________?


a(6!)2


b6! * ⁷P₆


c2(6!)


d6! * 7


View Answer 6! * ⁷P₆

How many four digit numbers can be formed using the digits {1, 3, 4, 5, 7,9}(repetition of digits is not allowed)?


a360


b60


c300


d180


View Answer 360

How many four digit even numbers can be formed using the digits {2, 3, 5, 1, 7, 9}


a60


b360


c120


d240


View Answer 60

A bag contains nine yellow balls, three white balls and four red balls. In how many ways can two balls be drawn from the bag?


a⁹C₂


b³C₂


c¹⁶C₂


d¹²C₂


View Answer ¹⁶C₂

In how many ways can three consonants and two vowels be selected from the letters of the word “TRIANGLE”?


a25


b13


c40


d30


View Answer 30

In a class there are 20 boys and 25 girls. In how many ways can a boy and a girl be selected?


a400


b500


c600


d20


View Answer 500

A question paper consists of five problems, each problem having three internal choices. In how many ways can a candidate attempt one or more problems?


a63


b511


c1023


d15


View Answer 1023

The cost of 10 kg of apples is equal to the cost of 24 kg of rice. The cost of 6 kg of flour equals the cost of 2 kg of rice. The cost of each kg of flour is Rs.20.50. Find the total cost of 4 kg of apples, 3 kg of rice and 5 kg of flour?


aRs.849.40


bRs.877.40


cRs.901.60


dRs.815.20


View Answer Rs.877.40

The denominator of a fraction is 1 less than twice the numerator. If the numerator and denominator are both increased by 1, the fraction becomes 3/5. Find the fraction?


a2/3


b3/5


c4/7


d5/9


View Answer 5/9

The cost of 2 chairs and 3 tables is Rs.1300. The cost of 3 chairs and 2 tables is Rs.1200. The cost of each table is more than that of each chair by__________?


aRs.70


bRs.75


cRs.50


dNone of these


View Answer None of these

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