Time Left - 15:00 mins

# Mathematics quiz on Number System, LCM and HCF (23-09-2020)

Attempt now to get your rank among 1193 students!

Question 1

If the number 23583ab ,is divisible by 80 then find the value of (a-b).

Question 2

The value of is:

Question 3

3 × 105 + 4 × 103 + 7 × 102 + 5 is equal to

Question 4

If a, b and c are three natural numbers in ascending order, then:

Question 5

How many numbers exist between 225 and 550 which are completely divisible by all of 4, 5 and 6?

Question 6

Traffic light at a road crossing changes in every 25 seconds. On the next crossing the traffic lights change in every 30 seconds. If they both change simultaneously at the same time, then at what time interval they again change together?

Question 7

If each among 63, 87 and 123 is divided by a number the remainders are same in every condition. What is the maximum possible value of the divisor?

Question 8

The sepoy of a regiment have to make a perfect square in the lines of 10, 15 and 20. What will be the lowest number of army men?

Question 9

Find the least number of 4 digit exactly divisible by 5, 6, 7, 8.

Question 10

LCM of two numbers is 340 times their HCF. 1f HCF is 26 and one of the numbers is 442, then the other number is:
• 1193 attempts