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Practice No. System Questions and Answers

The sum of the digits of a two-digit number is 9, and when the digits are reversed, the number decreases by 45. Find the changed number.
In a bag full of pencils, 3/4 of the pencils were colored pencils, and 8/15 of the colored pencils were red. If there were 72 red pencils in the bag, what ...
The sum of two numbers is 18 while the sum of their squares is 164. Find the sum of the cubes of those two numbers.
Find the difference between of the greatest among the numbers 0.82, 0.802, 0.85, 0.085 with the smallest among the numbers 0.3, 0.03, 0.203, 2.03
Bhawna won 3/5 of the marbles that were there at the beginning of the game. Ravi won 2/3 of the remaining marbles while Sunny won the remaining 80 marbles....
The denominator of a rational number is 4 more than its numerator. If the numerator is increased by 5 and the denominator is decreased by 3, we obtain 3. T...
The denominator of a positive rational number is 4 more than its numerator. If the numerator is increased by 6 and the denominator is increased by 5, then ...
A positive number, when 15 is added to it, becomes 50 times its reciprocal. Find this positive number.
A positive number becomes 34 times its reciprocal if 9 is subtracted from it. Find the number.
A positive number becomes 9 times its reciprocal when 3 is added to it. Find this number.
385! In the trailing Zeros, let us know.
What is the difference between 3/5 of 150 and 1/2 of 300?
Two friends received a bonus of ₹3,000 each in their bank accounts. They already have ₹47,000 and ₹57,000 in their respective bank accounts. The rati...
Select the option that gives decimal numbers 0.24, 1.23, 0.0881, and 2.66 arranged in ascending order.
A shopkeeper has milk of 3 different qualities. The first quality is 621 liters, the second quality is 644 liters, and the third quality is 690 liters. F...
The difference between two numbers is 60% of the larger number. If the smaller number is 10, find the larger number-
The value of a washing machine depreciates by 10% every year. The current price of the washing machine is ₹9477. What was the price of the machine three ...
Christina spends half of her salary and saves the other half. If she spends ₹ 40,000 monthly, what is her annual savings?
Sum of the three numbers is 150. Ratio of the first number to second number is 3:5 and the ratio of second number to third number is 5:7. Find the second n...
Sum of the three numbers is 180. Ratio of the first number to second number is 4:7 and the ratio of second number to third number is 7:9. Find the second n...
The ratio of two natural numbers 'x' and 'y' is 9:13, respectively. When 30 is added to 'x' and 15 is subtracted from 'y', the ratio of 'x' to 'y' becomes ...
The ratio of two natural numbers 'u' and 'v' is 3:4, respectively. When 12 is added to 'u' and 8 is subtracted from 'v', the ratio of 'u' to 'v' becomes 5:...
There are three numbers 'a', 'b' and 'c' (a < b < c) such that 'b' is equal to the average of 'a' and 'c'. 70% of 'c' is equal to 'a' and the difference be...
There are three numbers 'u', 'v' and 'w' (u < v < w) such that 'v' is equal to the average of 'u' and 'w'. 80% of 'w' is equal to 'u' and the difference be...
The cube of the difference between two given natural numbers is 1728, while the product of these two given numbers is 108. Find the sum of these two given ...
The cube of the difference between two given natural numbers is 1000, while the product of these two given numbers is 56. Find the positive difference betw...
Two students appeared in an exam and one secured 30 marks more than the other. If marks of the student who got more marks is 65% of the sum of the marks of...
Two students appeared in an exam and one secured 18 marks more than the other. If marks of the student who got more marks is 58% of the sum of the marks of...
The sum and product of two numbers are 18 and 72, respectively. If 'b' represents the sum of their reciprocals, then which of the following is true.
The average of five consecutive even numbers is 22. What is the smallest of these numbers?
Which pair of these numbers is cop rime?
If a cube of a number is subtracted from (153)², the number so obtained is 1457, Find the number.
The product of four consecutive numbers is always divisible by which of the following numbers?
Five times a positive integer is 3 less than twice its square. Find the integer.
If a, 1, b are in arithmetic progression and 1, a, b are in geometric progression, then a and b are respectively equate to _______ (where a ≠ b).
A number when divided by 234 gives the remainder 36. What will be the remainder when it is divided by 13?
If 1/7 of a number is subtracted from the number, the result is 30 less than the number. Find the number.
Find the smallest number that, when divided by 3, 4, 5, and 6, leaves a remainder of 2 but is divisible by
Find the number whose four-fifth is more than its three-fourth by 5.
Three-fifths of Rahul's salary is equal to Priya's salary, and two-thirds of Priya's salary is equal to Raj's salary. If the sum of their salaries is ₹1,...

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