Number System MCQs
Practice free Number System multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 807 questions — no login required.
Question 118easy
What is the least number when divided by 8, 12, 20 and 30 leaves a remainder 4 and when divided by 21 leaves a remainder 7 ?
Question 119easy
Six bells start ringing together and ring at intervals of 4, 8, 10, 12, 15 and 20 seconds respectively. how many times will they ring together in 60 minutes ?
Question 120easy
What is the least number which when divided by 5, 6, 7 and 8 leaves a remainder 3, but when divided by 9 leaves no remainder?
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Question 121easy
5(x + 3) = 25(3x - 4), then find the value of x
Question 122easy
Three numbers which are co-prime to one another are such that the product of the first two is 551 and that of last two is 1073. The sum of the three numbers is:
Question 123easy
The sum and products of two numbers are 12 and 35 respectively. The sum of their reciprocals will be:
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Question 124easy
The HCF and LCM of two numbers are 44 and 264 respectively. If the first number is divided by 2, the quotient is 44. The other number is:
Question 125easy
A teacher wants to arrange his students in an equal number of rows and columns. If there are 1369 students, the number of students in last row are:
Question 126easy
Ram left $$\frac{1}{3}$$ of his property to his widow and $$\frac{3}{5}$$ of the remainder to his daughter. He gave the rest to his son who received Rs. 6,400. How much was his original property worth?