Practice No. System Questions and Answers

• Find the sum of all two-digit numbers that are exactly divisible by 4.
• Sum and difference of two natural numbers is 89 and 15. Find the square of sum of digits of smaller number.
• Determine the value of 'n' if '87n9812' is always divisible by 9.
• Find the remainder when the number (289n + 147) is divided by 17.
• 'N' is the largest three-digit number that leaves 2 as a remainder when divided by 9, 12 and 5, Find the sum of digits of 'N'.
• The remainder obtained on dividing a number 'N' by 4 is 3, Find the remainder 'N + 9' is divided by '4'.
• Find the unit digit of (57 129  - 7).
• A number when divided by 45 leaves 38 as remainder. If the same number is divided by 15, the remainder would be:
• A number gives a remainder of 19 when divided by 50. Find the remainder when the same number is divided by 25.
• A number, when divided by 64, leaves a remainder of 47. What will be the remainder when it is divided by 16?
• A number leaves a remainder of 21 when divided by 55. Find the remainder when the same number is divided by 11.
• What is the smallest number that must be added to 750, so that it becomes completely divisible by 42?
• Find the least number that should be added to 1240 so that it is exactly divisible by 65.
• What is the minimum number that should be added to 850 to make it perfectly divisible by 37?
• Determine the least number that must be added to 960 to make it a multiple of 48.
• What is the smallest number that must be added to 1500 so that it becomes exactly divisible by 47?
• Find the least number that should be added to 2050 so that it becomes exactly divisible by 63.
• Average marks scored by a student in 5 subjects is 75. If average marks scored by him excluding his highest and lowest marks is 60 and highest marks scored...
• The nine-digit number 7x31265y2 is divisible by 88. Find the value of √(xy), given that x < 8 and y < 8.
• A number exceeds 45 times its reciprocal by 5/6. Find the number.
• A number is 2/5 more than 33 times its reciprocal. What is the number?
• A number exceeds 40 times its reciprocal by 7/8. Determine the number.
• A number is more than 21 times its reciprocal by 11/9. What is the number?
• What is the least value of ‘a’ that should come in the number 5943a2, to make the number exactly divisible by 8?
• A number increases by 30 when 60% of it is added to itself. What is the final value after addition?
• When 40% of a number is added to the number itself, the result is 21 more than the original number. What is the resulting number?
• A number becomes 90 more than itself when 120% of it is added to it. What number is obtained after the addition?
• If 85% of a number is added to itself, the result exceeds the original number by 51. Find the final number obtained.
• When 65% of a number is added back to the number, the increase is found to be 39. What is the final value obtained?
• In the number 862x4, if it is divisible by 56 and x > 5, then what is the value of x?
• A three-digit number 4c7 is added to the number 538 to give a three-digit number 9d5 which is divisible by 9. Find the value of (d - c)....
• If the number 640x6 is exactly divisible by 56 and x is greater than 5, then determine the value of x.
• If 893x2 is divisible by 56, and x > 6, find x.
• An integer with positive sign (+) is always greater than
• Out of 3 √4, √2, 6 √3, 4 √5 which number is the biggest?
• Each member of a picnic party contributed twice to their serial number. The total collection was Rs 3042. The (approximate) number of members present in th...
• Determine the highest possible value of (x + y) if the number '3x725y4' is divisible by 12.
• What is the largest sum of m and n such that ‘4m932n6’ is divisible by 12?
• Find the greatest value of the expression (p + q), if the number ‘2p618q0’ is divisible by 12.
• If the number ‘7k854l2’ is divisible by 12, then what is the highest value of (k + l)?