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Maths 2024 MCQs [All-Courses]

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Our questions cover Arithmetic, Algebra, Geometry, Ratios, Percentages, Equations, Word Problems, and basic to advanced quantitative skills.

If 1/5 of the keyboards are not working out of a total of 3,000, how many keyboards are working:

A 600

B 1500

C 2000

D 2400

Review Detailed Answer

Correct Answer: 2400
Explanation:

To find the number of working keyboards, we need to subtract the number of non-working keyboards from the total.
Number of non-working keyboards = 1/5 x 3,000 = 600
Number of working keyboards = Total keyboards - Non-working keyboards

=3,000-600

= 2,400

The correct answer is: (D) 2400

The sum of three consecutive integers is 33. Find the smallest integer.

A 8

B 10

C 11

D 13

Review Detailed Answer

Correct Answer: 10
Explanation:

Consecutive integers are numbers that follow each other in order, e.g., n, n+1, n+2
The sum of three Consecutive integers is written as
n + (n+1) + (n+2) = 3n + 3
n + (n+1) + (n+2) = 33 \implies 3n + 3 = 33 \implies 3n = 30 \implies n = 10

An article is sold for 596 after a 20% discount. What was the original price?

A 945

B 745

C 800

D 600

Review Detailed Answer

Correct Answer: 745

The average age 9 members of a committee are the same as it was 2 years ago, because an old number has been replaced by a younger number. Find how much younger is the new member than the old number?

A 7 years

B 11 years

C 18 years

D 27 years

Review Detailed Answer

Correct Answer: 18 years

The average temperature for Monday, Tuesday, Wednesday and Thursday was 48 degrees and for Tuesday, Wednesday, Thursday and Friday was 46 degrees. If the temperature on Monday was 42 degrees. Find the temperature on Friday?

A 40 degrees

B 38 degrees

C 36 degrees

D 34 degrees

Review Detailed Answer

Correct Answer: 34 degrees

A building contractor employs 20 male, 15 female and 5 child workers. To a male worker he pays Rs.25 per day, to a female worker Rs.20 per day and a child worker Rs.8 per day. The average wage per day paid by the contractor is__________?

A Rs.20

B Rs.21

C Rs.22

D Rs.23

Review Detailed Answer

Correct Answer: Rs.21

Visitors to show were charged Rs.15 each on the first day. Rs.7.50 on the second day, Rs.2.50 on the third day and total attendance on the three days were in ratio 2:5:13 respectively. The average charge per person for the whole show is___________?

A Rs.3

B Rs.4.50

C Rs.5.00

D Rs.7.50

Review Detailed Answer

Correct Answer: Rs.5.00

In a hostel there were 100 students. To accommodate 20 more students the average is decreased by rupees 5. But total expenditure increased by Rs.400. Find the total expenditure of the hostel now?

A Rs.5000

B Rs.4600

C Rs.5400

D Rs.2300

Review Detailed Answer

Correct Answer: Rs.5400

A batsman in his 17th innings makes a score of 85 and their by increasing his average by 3. What is his average after the 17th innings?

A 34

B 35

C 36

D 37

Review Detailed Answer

Correct Answer: 37

The average age of a husband and a wife is 23 years when they were married five years ago but now the average age of the husband, wife and child is 20 years(the child was born during the interval). What is the present age of the child?

A 1 year

B 2 years

C 3 years

D 4 years

Review Detailed Answer

Correct Answer: 4 years

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Maths 2024 MCQs [All-Courses]

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All Topics 2024

If 1/5 of the keyboards are not working out of a total of 3,000, how many keyboards are working:

The sum of three consecutive integers is 33. Find the smallest integer.

An article is sold for 596 after a 20% discount. What was the original price?

The average age 9 members of a committee are the same as it was 2 years ago, because an old number has been replaced by a younger number. Find how much younger is the new member than the old number?

The average temperature for Monday, Tuesday, Wednesday and Thursday was 48 degrees and for Tuesday, Wednesday, Thursday and Friday was 46 degrees. If the temperature on Monday was 42 degrees. Find the temperature on Friday?

A building contractor employs 20 male, 15 female and 5 child workers. To a male worker he pays Rs.25 per day, to a female worker Rs.20 per day and a child worker Rs.8 per day. The average wage per day paid by the contractor is__________?

Visitors to show were charged Rs.15 each on the first day. Rs.7.50 on the second day, Rs.2.50 on the third day and total attendance on the three days were in ratio 2:5:13 respectively. The average charge per person for the whole show is___________?

In a hostel there were 100 students. To accommodate 20 more students the average is decreased by rupees 5. But total expenditure increased by Rs.400. Find the total expenditure of the hostel now?

A batsman in his 17th innings makes a score of 85 and their by increasing his average by 3. What is his average after the 17th innings?

The average age of a husband and a wife is 23 years when they were married five years ago but now the average age of the husband, wife and child is 20 years(the child was born during the interval). What is the present age of the child?