HCF of $70, 105 \text{and }175\text{ is}$ _____.

Important Questions on Playing With Numbers

MEDIUM

6th CBSE

IMPORTANT

Foundation Course Mathematics>Chapter 3 - Playing With Numbers>Exercise>Q 8

I am the fifth multiple of the LCM of $2$ and $7$.  What number am I?

MEDIUM

6th CBSE

IMPORTANT

Foundation Course Mathematics>Chapter 3 - Playing With Numbers>Exercise>Q 9

Determine the number nearest to $100000$ but greater than $100000$ which is exactly divisible by each of $8, 15 \text{and} 21$.

EASY

6th CBSE

IMPORTANT

Foundation Course Mathematics>Chapter 3 - Playing With Numbers>Exercise>Q 10

Which of the following is not a pair of twin primes between $10$ and $40$?

EASY

6th CBSE

IMPORTANT

Foundation Course Mathematics>Chapter 3 - Playing With Numbers>Exercise>Q 11

The least prime number with consecutive digits is _____.

MEDIUM

6th CBSE

IMPORTANT

Foundation Course Mathematics>Chapter 3 - Playing With Numbers>Exercise>Q 12

The greatest number that exactly divides $81$ and $153$ is _____. 

MEDIUM

6th CBSE

IMPORTANT

Foundation Course Mathematics>Chapter 3 - Playing With Numbers>Exercise>Q 13

$96$ is not a multiple of _____.

MEDIUM

6th CBSE

IMPORTANT

Foundation Course Mathematics>Chapter 3 - Playing With Numbers>Exercise>Q 14

Replace $y$ by the non-zero digit, if the number $68y70$ is divisible by $6$.

EASY

6th CBSE

IMPORTANT

Foundation Course Mathematics>Chapter 3 - Playing With Numbers>Exercise>Q 15

What is the sum of prime numbers between $11$ and $20$?