ICSE Skills In Mathematics>Chapter 5 - Factors and Multiples>EXERCISE>Q 7

EASY

7th ICSE

IMPORTANT

Earn 100

Write $28$ as the sum of two primes.

Important Questions on Factors and Multiples

EASY

7th ICSE

IMPORTANT

ICSE Skills In Mathematics>Chapter 5 - Factors and Multiples>EXERCISE>Q 7

Write $48$ as the sum of two primes.

MEDIUM

7th ICSE

IMPORTANT

ICSE Skills In Mathematics>Chapter 5 - Factors and Multiples>EXERCISE>Q 8

Find the sum of the smallest and largest prime factors of $380$ .

EASY

7th ICSE

IMPORTANT

ICSE Skills In Mathematics>Chapter 5 - Factors and Multiples>EXERCISE>Q 9

What is the smallest odd prime? When you add $10$ to this, do you get another prime?

MEDIUM

7th ICSE

IMPORTANT

ICSE Skills In Mathematics>Chapter 5 - Factors and Multiples>EXERCISE>Q 10

What is the smallest number

x

so that

50 + x

may be a prime?

EASY

7th ICSE

IMPORTANT

ICSE Skills In Mathematics>Chapter 5 - Factors and Multiples>EXERCISE>Q 1

F_{10}

means the set of factors of

10

. Hence

F_{10} = \{1, 2, 5, 10\}

. Write

F_{4}

.

EASY

7th ICSE

IMPORTANT

ICSE Skills In Mathematics>Chapter 5 - Factors and Multiples>EXERCISE>Q 1

F_{10}

means the set of factors of

10

. Hence

F_{10} = \{1, 2, 5, 10\}

. Write

F_{15}

.

EASY

7th ICSE

IMPORTANT

ICSE Skills In Mathematics>Chapter 5 - Factors and Multiples>EXERCISE>Q 1

F_{10}

means the set of factors of

10

. Hence

F_{10} = \{1, 2, 5, 10\}

. Write

F_{20}

.

EASY

7th ICSE

IMPORTANT

ICSE Skills In Mathematics>Chapter 5 - Factors and Multiples>EXERCISE>Q 1

F_{10}

means the set of factors of

10

. Hence

F_{10} = \{1, 2, 5, 10\}

. Write

F_{24}

.