Mathematics MCQs

Page No. 84

The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is :___________?


a20


b30


c40


dNone of these


View Answer 20

Find the number which when multiplied by 15 is increased by 196.


a14


b20


c26


d28


View Answer 14

A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is :_________?


a18


b24


c42


d81


View Answer 24

f the number obtained on interchanging the digits of a two-digit number is 18 more than the original number and the sum of the digits is 8, then what is the original number ?


a26


b35


c53


dCannot be determined


View Answer 35

The sum of three numbers is 98. If the ratio of the first to the second is 2 : 3 and that of the second to the third is 5 : 8, then the second number is :__________?


a20


b30


c48


d58


View Answer 30

The ratio of the number of boys and girls in a college is 7 : 8. If the percentage iikcrease in the number of boys and girls be 20% and 10% respectively, what will be the new ratio ?


a8 : 9


b17 : 18


c21 : 22


dCannot be determined


View Answer 21 : 22

A surn of money is to be distributed among A, B, C, D in the proportion of 5 : 2 : 4 : 3. If C gets Rs. 1000 more than D, what is B’s share ?


aRs. 500


bRs. 1500


cRs. 2000


dNone of these


View Answer Rs. 2000

Two numbers are respectively 20% and 50% more than a third number. The ratio of the two numbers is :__________?


a2 : 5


b3 : 5


c4 : 5


d6 : 7


View Answer 4 : 5

Two numbers are in the ratio 3 : 5. If 9 is subtracted from each, the new numbers are in the ratio 12 : 23. The smaller number is :________?


a27


b33


c49


d55


View Answer 49

In a bag, there are coins of 25 p, 10 p and 5 p in the ratio of 1 : 2 : 3. If there is Rs. 30 in all, how many 5 p coins are there?


a50


b100


c150


d200


View Answer 150

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