Algebra Archives - MCQ and Quiz for Exams

1. If the average of 10% of a number, 25% of that number, 50 % of that number and 75% of that number is 24, then the number will be

50

60

70

80

Detailed SolutionIf the average of 10% of a number, 25% of that number, 50 % of that number and 75% of that number is 24, then the number will be

2. Missing number of the series (?) l,3,7,..?.,31,…?..are

14 and 60

13 and 63

15 and 60

15 and 63

Detailed SolutionMissing number of the series (?) l,3,7,..?.,31,…?..are

3. Four years ago, the average age of a family of four persons was 18 years. During this period, a baby was born. Today if the average age of the family is still 18 years, the age of the baby is

3.0 years

2.5 years

2.0 years

1.2 years

Detailed SolutionFour years ago, the average age of a family of four persons was 18 years. During this period, a baby was born. Today if the average age of the family is still 18 years, the age of the baby is

4. If the sum of two numbers is 100 and their difference is 50, the ratio of the two numbers will be

02:01

03:01

04:01

05:01

Detailed SolutionIf the sum of two numbers is 100 and their difference is 50, the ratio of the two numbers will be

5. What is the sum of numbers 2Â°, 3Â° and 4Â°?

9

3

0

2

Detailed SolutionWhat is the sum of numbers 2Â°, 3Â° and 4Â°?

6. The smallest number x, such that the LCM of 15, 20, x is 180, is

6

9

18

45

Detailed SolutionThe smallest number x, such that the LCM of 15, 20, x is 180, is

7. Which one of the following is same as 30% of 40% of 560 ?

15% of 80% of 280

30% of 80% of 280

60% of 40% of 280

80% of 40% of 280

Detailed SolutionWhich one of the following is same as 30% of 40% of 560 ?

8. The mean or a, b, c, d is If A = a – 5, B = b -10, C = c – 25 and D = d – 40, then the mean of A, B, C, D is

25

30

41

50

Detailed SolutionThe mean or a, b, c, d is If A = a – 5, B = b -10, C = c – 25 and D = d – 40, then the mean of A, B, C, D is

9. Three years ago, the average age of X and Y was 18 years. With X joining them, this average age became 22 years. What was the age of ‘Z’ ?

30 years

26 years

29 years

291/2 years

Detailed SolutionThree years ago, the average age of X and Y was 18 years. With X joining them, this average age became 22 years. What was the age of ‘Z’ ?

10. The following table gives the annual profit of a company (in lakh rupees) 2008-09 2009-10 2010-11 2011-12 2012-13590 620 656 690 726The period which has maximum percent increase in profit over previous period

2009-10

2010-11

2011-12

2012-13

Detailed SolutionThe following table gives the annual profit of a company (in lakh rupees) 2008-09 2009-10 2010-11 2011-12 2012-13590 620 656 690 726The period which has maximum percent increase in profit over previous period

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