START UP MATHEMATICS>Chapter 3 - Playing with Numbers>REVIEW EXERCISES>Q 2

MEDIUM

6th CBSE

IMPORTANT

Earn 100

Which of the following pairs of numbers are co-prime?

$25$ and $64$

Important Questions on Playing with Numbers

MEDIUM

6th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 3 - Playing with Numbers>REVIEW EXERCISES>Q 3

Write the greatest

3 -

digit number and express it in terms of its prime factors.

MEDIUM

6th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 3 - Playing with Numbers>REVIEW EXERCISES>Q 4

Is the sum of any two prime numbers always even? Justify your answer with the help of examples.

MEDIUM

6th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 3 - Playing with Numbers>REVIEW EXERCISES>Q 5

The students of a class can be divided into groups of

2, 3, 5

or

6

. What is the least number of children this class can have?

HARD

6th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 3 - Playing with Numbers>REVIEW EXERCISES>Q 6

Using divisibility tests, determine which of the following numbers are divisible by $2, 3, 4, 5, 6, 8, 9, 10$ and $11$ (write Yes or No).

Question Image

MEDIUM

6th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 3 - Playing with Numbers>REVIEW EXERCISES>Q 7

Find the smallest

6 -

digit number, which is divisible by

12, 15

and

30 .

MEDIUM

6th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 3 - Playing with Numbers>THINKING SKILLS>Q 1

If a number is divisible by

2

and

4

, is it divisible by

8

?

MEDIUM

6th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 3 - Playing with Numbers>THINKING SKILLS>Q 2

Find two numbers whose LCM is $4$ and sum is $5$ .

MEDIUM

6th CBSE

IMPORTANT

START UP MATHEMATICS>Chapter 3 - Playing with Numbers>THINKING SKILLS>Q 3

Find the smallest number which on dividing by

6, 8

and

12

leaves the remainder

4, 6

and

10

respectively.