EASY
6th ICSE
IMPORTANT
Earn 100

Which of the following are the prime numbers?

50% studentsanswered this correctly

Important Questions on Playing With Numbers

EASY
6th ICSE
IMPORTANT
ICSE NumbersWiz 6>Chapter 7 - Playing With Numbers>Mental Maths>Q 13
Write down the numbers between 10 and 20 which have exactly 2 factors.
EASY
6th ICSE
IMPORTANT
ICSE NumbersWiz 6>Chapter 7 - Playing With Numbers>Mental Maths>Q 14
Find the sum of all the prime numbers between 1 and 10.
EASY
6th ICSE
IMPORTANT
ICSE NumbersWiz 6>Chapter 7 - Playing With Numbers>Chapter Assessment>Q 1

Fill in the blanks.

Numbers with only two factors, one and itself are called _____ numbers.

EASY
6th ICSE
IMPORTANT
ICSE NumbersWiz 6>Chapter 7 - Playing With Numbers>Chapter Assessment>Q 1

Fill in the blanks.

The smallest composite number is _____.
MEDIUM
6th ICSE
IMPORTANT
ICSE NumbersWiz 6>Chapter 7 - Playing With Numbers>Chapter Assessment>Q 1

Fill in the blanks.

A set of three consecutive prime numbers differing by 2 is called a _____.

EASY
6th ICSE
IMPORTANT
ICSE NumbersWiz 6>Chapter 7 - Playing With Numbers>Chapter Assessment>Q 2

Answer True (T) or False (F).

Two composite numbers are never co-prime.

EASY
6th ICSE
IMPORTANT
ICSE NumbersWiz 6>Chapter 7 - Playing With Numbers>Chapter Assessment>Q 2

The H.C.F. of two numbers is always a factor of their L.C.M.

EASY
6th ICSE
IMPORTANT
ICSE NumbersWiz 6>Chapter 7 - Playing With Numbers>Chapter Assessment>Q 2

Answer True (T) or False (F).

The number of prime factorization of any number is more than 1.