Find the L.C.M. of the following numbers in which one number is the factor of the other. (a) 5, 20


1

2061

April 3, 2019

Find the L.C.M. of the following numbers: (a) 9 and 4


1

4547

April 3, 2019

Find the smallest four digit number which is divisible by 18, 24 and 32


1

2693

April 3, 2019

Find the least number which when divided by 6, 15 and 18 leave remainder 5 in each case


1

3779

April 3, 2019

Three tankers contain 403 liters, 434 liters and 465 liters of diesel respectively


1

815

April 3, 2019

The traffic lights at three different road crossings change after every 48 seconds, 72 seconds


1

2027

April 3, 2019

Determine the largest 3digit number exactly divisible by 8, 10 and 12


1

1613

April 3, 2019

Determine the smallest 3digit number which is exactly divisible by 6, 8 and 12


1

1846

April 3, 2019

The length, breadth, and height of a room are 825 cm, 675 cm, and 450 cm, respectively


1

465

April 3, 2019

Three boys step off together from the same spot. Their steps measure 63 cm, 70 cm, and 77 cm,


1

1687

April 3, 2019

Renu purchases two bags of fertilizer of weights 75 kg and 69 kg


1

1073

April 3, 2019

H. C.F. of coprime numbers 4 and 15 was found as follows factorization:


1

546

April 3, 2019

What is the H.C.F. of two consecutive : (a) numbers?


1

352

April 3, 2019

Find the HCF of the following numbers : (a) 18, 48


1

4291

April 3, 2019

I am the smallest number, having four different prime factors. Can you find me?


1

474

April 3, 2019

18 is divisible by both 2 and 3. It is also divisible by 2 x 3 = 6. Similarly,


1

556

April 3, 2019

Determine if 25110 is divisible by 45


1

1020

April 3, 2019

In which of the following expressions, prime factorisation has been done?


1

1202

April 3, 2019

The sum of two consecutive odd numbers is divisible by 4. Verify this statement with the help of same examples


1

1357

April 3, 2019

The product of three consecutive numbers is always divisible by 6


1

1348

April 3, 2019

Find all the prime factors of 1729 and arrange them in ascending order


1

900

April 3, 2019

Write the smallest 5digit number and express it in the form of its prime factors


1

2876

April 3, 2019

Write the greatest 4digit number and express it in terms of its prime factors


1

2932

April 3, 2019

Which factors are not included in the prime factorisation of a composite number?


1

600

April 3, 2019

Here are two different factor trees for 60. Write the missing numbers


1

789

April 3, 2019

Which of the following statements are true? (a) If a number is divisible by 3, it must be divisible by 9


1

313

April 3, 2019

A number is divisible by 12. By what other numbers will that number be divisible?


1

694

April 3, 2019

A number is divisible by both 5 and 12. By which other number will that number be always divisible?


1

705

April 3, 2019

Which of the following numbers are coprime? (a) 18 and 35


1

2671

April 3, 2019

Write all the numbers less than 100 which are corrimon multiples of 3 and 4


1

368

April 3, 2019
