Practice No. System Questions and Answers

• Rs 720 is to be divided among P, Q and R so that P gets 3/5 of Q’s share and R gets 1/3 of P’s share. Share of R is:
• When N is divided by 5 the remainder is 2. What is the remainder, when n³ is divided by 5?
• What is the value of 1² + 3² + 5² + 7² + 9² ................ 19²?
• What least number must be added to 6834 to get a number exactly divisible by 18?
• The difference between a number and its four – seventh is 60. What is the number?
• The ratio of Raj’s to Simran’s salary is 3: 5. If Simran’s salary is increased by 25%, her total salary becomes Rs. 54,000. What is the s...
• The sum of three consecutive odd natural numbers each divisible by 3 is 81. Which number is the largest number among the three numbers?
• Out of four numbers, the average of the first three is 16 and that of the last three is 14. If the last number is 17, then find the first number?
• Which of the following is a prime number?
• Which of the following is a prime number?
• Which of the following is a prime number?
• Which of the following is a prime number?
• Which of the following is a rational number?
• Find the number of factors of 240? ...
• Find the number of factors of 80?
• Find the number of prime factors of 300?
• In a division sum, the divisor is 12 times the quotient and also 5 times of the remainder. If the remainder is 48, then the dividend is:
• What is the remainder when 1427 is divided by 13? ...
• What is the remainder when 8035 is divided by 81? ...
• What is the unit digit of 49 15?
• Find the number of zeroes in the end of 100!
• Find the number of zeroes in the end of 160!
• Find the number of zeroes in the product of 60 × 61 × 62 × ........ × 80?
• Find the number of zeroes in the product of 20 × 21 ×  22 ×   ........ ×   40? ...
• What is least number which when successively divided by 5, 3 and 4 leaves a remainder 4, 2 and 3 respectively? ...
• Least number which when multiplied to 325 gives a perfect square: ...
• Least number which when multiplied to 3456 gives a perfect cube: ...
• How many times I write digit ‘1’ in first hundred natural numbers? 
• 111(16 - 1) is divisible by  ...
• Least number which when subtracted from 5442 gives a perfect square is: ...
• Least number which when subtracted from 6509 so that it is divisible by 58? ...
• How many digits are required to write first 500 natural numbers?
• 11 4 + 11 5 + 11 6 is divisible by  ...
• ³√64/√64 ÷ √(225/81) x ³√125 is equal to:
• (5.53 – 4.07) 2/(4.07 – 3.15)(3.15 – 5.53) + (4.07 – 5.53) 2/(3.15 – 5.53)(5.53 – 4.07) + (3.15 – 5.53) 2/(5.53 – 4.07)(4.07 – 3.15) is s...
• The divisor is 35 times the quotient and 7 times the remainder. If the quotient is 18, the dividend is : 
• The unit’s digit in the product 1771 × 2663 × 3365 is 
• If the difference of two numbers is 4 and the difference of their squares is 56, then the larger number is
• Convert 32.56 into binary system?