CBSE > Class 06 > Maths (OLD) | CBSE Board | Homework Help

A mixture is a combination of two or more substances (elements or compounds) which is not done chemically.
Mixtures are two types Homogeneous Mixtures and Heterogeneous mixtures.

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How we can find LCM of 36,70,77

Posted by Gauri Sangokar 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

3 answers

Hadika Yasmin 6 years, 5 months ago

The numbers 13 and 31 are prime numbers both these numbers have same digits 1 and 3 find such pairs of prime numbers up to 100

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Yogita Ingle 6 years, 5 months ago

LCM of 36,70,77
36 = 3 × 3 × 2 × 2
70 = 7 × 5 × 2
77 = 7 × 11
<abbr title="least common multiple">LCM</abbr> = 3 × 3 × 2 × 2 × 7 × 5 × 2 × 11 = 13860

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Gauri Sangokar 6 years, 5 months ago

First we have to write multiples of the numbers 36,70,77

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5.8+5.7

Posted by King Gaming Mann 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

1 answers

Sia ? 6 years, 5 months ago

11.5

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Prime number means odd number then all prime numbers are odd how is it false

Posted by Sanchit Dolli 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

2 answers

Samruddhi Mane 6 years, 5 months ago

Because 2 is only the even prime no. Rest all are odd no.

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Yogita Ingle 6 years, 5 months ago

False. 2 is a prime number: the only even prime number.
A prime number is a number that is only precisely divisible by itself and one. No number can precisely divide 2 other than one, so it is prime.

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Answer of third lesson exercise 3.7 Q6

Posted by Pradip Mundhekar 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

1 answers

Surekha Thote 6 years, 5 months ago

add

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A container 15l of oil 345ml oil leaked due to leakage how much oil is left

Posted by Soumya Sharan 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

1 answers

Yogita Ingle 6 years, 5 months ago

A container 15l of oil 345ml oil leaked
Oil left = 345 - 15 = 330 mil

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

Posted by G V Sai Dilep 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

1 answers

Yogita Ingle 6 years, 5 months ago

The greatest 4 digit number = 9999
9999 = 3 × 3 × 11 × 101

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Why

Posted by Adyasha Bharati 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

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A number is divisible by 18. By what other number will it be always divisible?

Posted by Soni Kushwaha 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

1 answers

Khushi Ayusha 6 years, 5 months ago

I think 9

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Factor of 1098

Posted by Nitu Sinha 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

1 answers

Yogita Ingle 6 years, 5 months ago

The factors of 1,098 is 1, 2, 3, 6, 9, 18, 61, 122, 183, 366, 549, 1098

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HCF of 825 ,675,450

Posted by Shreyas Kushwaha 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

3 answers

Khushi Ayusha 6 years, 5 months ago

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Yogita Ingle 6 years, 5 months ago

825 = 3 × 5 × 5 × 11
675 = 3 × 3 × 3 × 5 × 5
450 = 2 × 3 × 3 × 5 × 5

HCF of 825, 675, and 450 = 3 × 5 × 5 = 75

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Satish Kumar 6 years, 5 months ago

LCM

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Factor in 69

Posted by Raju Gupta 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

1 answers

Yogita Ingle 6 years, 5 months ago

Factor of 69 is 1 , 3 , 23 and 69

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The product of two numbers is 2560 and their LCM is 320 find their HCF

Posted by Soumya Ranjan 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

1 answers

Yogita Ingle 6 years, 5 months ago

We know that product of two no. = product of their hcf and lcm.

then, let the no. be a and b .
so , a × b = lcm (a, b) × hcf ( a,b)
since a × b = 2560
then , 2560 = 320 × hcf ( a ,b)

hcf (a, b) = 2560 / 320 = 8

Hence their hcf = 8

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What are composite number

Posted by Cbse Student 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

2 answers

Sia ? 6 years, 5 months ago

A composite number is a positive integer that can be formed by multiplying two smaller positive integers.

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Khushi Ayusha 6 years, 5 months ago

The numbers which have more than two factors is called composite number. Example:- Factors of 3 - 1, 3 Factors of 15 - 1, 3, 5, 15 So 3 is not a composite number but 15 is a composite number

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What is the LCM of 147654

Posted by Pavan Shukla 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

1 answers

Khushi Ayusha 6 years, 5 months ago

Findv out yourself Don't you know the method of taking out LCM qnd reading in class 6

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What are twin prime numbers

Posted by Hetal Mistry 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

1 answers

Yogita Ingle 6 years, 5 months ago

Twin prime are those numbers which are prime and having a difference of two ( 2 ) between them.

For Example: 41 and 43

41 and 43 both are prime numbers and they are having a difference of two ( 2 ) between them i.e. 43 - 41 = 2

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What is estimating numbers ?

Posted by Ajit Shinde 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

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Estimate example

Posted by Laxmi Thakur 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

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A surface of a ball is example of ...........surface. A geometrical figure which have no size but have fixed position

Posted by Jyoti Kohli 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

2 answers

Khushi Ayusha 6 years, 5 months ago

Spere

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Monish Chandran 6 years, 5 months ago

Sphere

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Divisibility test by 9

Posted by Pushpa Sharma 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)

2 answers

Sia ? 6 years, 5 months ago

A number is divisible by 9 if the sum of the digits is divisible by 9.

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Khushi Ayusha 6 years, 5 months ago

A number added individually and the sum is divisible by 9 then the whole number is divisible. Example :- 98765432 = 9+8+7+6+5+4+3+2 = 45. 45 is divisible by 9 so the whole number is divisible

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3÷4

Posted by Ritu Chawla 6 years, 5 months ago

CBSE > Class 06 > Maths (OLD)