HCF and LCM

IMPORTANT

HCF and LCM: Overview

This topic covers concepts such as Methods to Find HCF, Division Method to Find HCF, Shortcut for Finding HCF, Methods to Find LCM, Common Division Method to Find LCM, Shortcut for Finding LCM, HCF and LCM of Fractions, etc.

Important Questions on HCF and LCM

EASY
IMPORTANT

What is the number of divisors of $360$?

MEDIUM
IMPORTANT

491 + 492 + 493 + 494 is divisible by:

MEDIUM
IMPORTANT

What is the least number which when divided by 15,17and18 leaves remainder 3 in each case?

MEDIUM
IMPORTANT

The greatest number that can divide 140, 176 and 264 leaving remainder of 4, 6 and 9 respectively.

EASY
IMPORTANT

What will be the remainder when (5382+53) is divided by 54?

EASY
IMPORTANT

First 10 even natural numbers are multiplied with the first 5 multiples of 5. Find out the number of zeroes at the end of the product.

EASY
IMPORTANT

HCF and LCM of two numbers are 7 and 140 respectively. If the numbers are between 20 and 45, the sum of the numbers is _____.

MEDIUM
IMPORTANT

The sum of two numbers is 216 and their HCF is 27. How many pairs of such number are there?

MEDIUM
IMPORTANT

From the given details estimate the number of people affected by Dengue fever in a particular locality in the year 2006.

Year 2006 2007 2008 2009 2010 2011
No of People ? 90 135 270 675 2025

 

EASY
IMPORTANT

What is the remainder when [(1931)221]428 is divided by 1932?

EASY
IMPORTANT

The greatest 4-digit number exactly divisible by 10, 15, 20 is -

EASY
IMPORTANT

What is the HCF of 18 and 48?

EASY
IMPORTANT

How many number lie between 1-1000 which divisible by 6,7and15.

EASY
IMPORTANT

Find the number of factors of 240.

EASY
IMPORTANT

The value of (0.00032)0.6 is_____.

HARD
IMPORTANT

Traffic lights at three different points are changing respectively at 12, 36 and 60 seconds. If all the three lights are changed together at 8: 12: 14 hours, then at what time does the next change take place together?

HARD
IMPORTANT

Find the least number of square tiles required to pave the ceiling of a room is 12 m 56 cm long and 14 cm 44 mm broad :

HARD
IMPORTANT

Traffic lights at three different points are changing respectively at 24, 36 and 48 seconds. If all the three lights are changed together at 10: 12: 48 hours, then at what time does the next change take place together?

HARD
IMPORTANT

A florist bought n number of flowers for 2770, and sell a certain number of flowers at 1000 and gain 150 of profit. Find the number of flowers left:

HARD
IMPORTANT

Find the least number of square tiles required to pave the ceiling of a room is 11 cm 44 mm long and 13 cm 34 mm broad :