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An electric iron draws a current of 0.5A at 220v. How much charges will pass in 30 minutes

Posted by Anjela Kujur 5 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Navdeep Saini 5 years, 7 months ago

We know that I=Q/T 0.5=Q/1800 0.5×1800=Q 900=Q Or Q=900 C

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Explain theorem 6.6

Posted by Mukesh Swami 5 years, 7 months ago

CBSE > Class 10 > Mathematics

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The product of three consecutive numbers is divisible by 6. Proof

Posted by Vijay Rawat 5 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Navdeep Saini 5 years, 7 months ago

We know that one of the 3 consecutive integers is even. So ithe product is divisible by 2 Also one of the 3 consecutive integers is divisible by 3 So the product is also divisible by 3. The productis divisible by 2 and 3 both So it is divisible by 6

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3+root 5 prove irration

Posted by Amit Singh 5 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Diya Bansal 5 years, 7 months ago

Let 3+√5 is rational So , 3+√5 = a/b √5 = a/b -3 √5 = a-3b/b We know that √5 is irrational and a-3b/b is rational . A irrational number can not be equal to rational number. Hence , 3+√5 is irrational

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a box contain cards marked with numbers5 to 20 · A card is drawn from the bag at random · Find the probability of getting a number which is a perfect square·

Posted by Krisha Tripathi 5 years, 7 months ago

CBSE > Class 10 > Mathematics

2 answers

Stranger?♋ Things 5 years, 7 months ago

P(perfect square)=2/16=1/8

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Stranger?♋ Things 5 years, 7 months ago

Total outcomes=16. And favourable outcomes=(9,16)=2

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Find the lcm and hcf of the following integers by applying the prime factorization method( 1) 40,36 and126 (2)84,90 and120

Posted by Panthil Intwala 5 years, 7 months ago

CBSE > Class 10 > Mathematics

2 answers

Varun Jakhar 5 years, 7 months ago

1=5 2=6

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Akanksha Kumari Akanksha Kumari 5 years, 7 months ago

1=5

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Where is bund situated

Posted by Pardip Kaur 5 years, 7 months ago

CBSE > Class 10 > Mathematics

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If n is an odd integer , then show that n power 2— 1 is divisible by 8 .

Posted by Harsh Yadav 5 years, 7 months ago

CBSE > Class 10 > Mathematics

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Find the HCF of 96 and 404 by prime Vactorisation method hence find their LCM

Posted by Kanishka Kani 5 years, 7 months ago

CBSE > Class 10 > Mathematics

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By what number should 1365 divided to get 31 as quotient and 32 as remainder?

Posted by Anirudha Maurya 5 years, 7 months ago

CBSE > Class 10 > Mathematics

5 answers

Shiksha Rathor 5 years, 7 months ago

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Stranger?♋ Things 5 years, 7 months ago

Dividend=Divisor×quotient+remainder

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Stranger?♋ Things 5 years, 7 months ago

Let the divisor be D, 1365=D×31+32=> 31D=1333

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Stranger?♋ Things 5 years, 7 months ago

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Anirudha Maurya 5 years, 7 months ago

Please tell ans

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Arsarwal 9th ka1st chapter

Posted by Aman Roy 5 years, 7 months ago

CBSE > Class 10 > Mathematics

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Araswal 9th chater1st exercise 1c

Posted by Aman Roy 5 years, 7 months ago

CBSE > Class 10 > Mathematics

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Why we find the product only for the zeros of the given polynomial if the zeros are reciprocal of each other

Posted by Riya Prakash 5 years, 7 months ago

CBSE > Class 10 > Mathematics

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Prove that product of two consecutive integers is divisible by 2

Posted by Vidisha Modi 5 years, 7 months ago

CBSE > Class 10 > Mathematics

2 answers

Stranger?♋ Things 5 years, 7 months ago

n(n+1)=n 2 +1 =((n+1)−1)(n+1) =(n+1) 2 −(n+1) So if (n+1) is an even no (n+1) 2 is even and diff of even is always even is (n+1). If odd then (n+1) 2 is odd and diff of odd is always even So n(n+1) is always even and divisible by 2.

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Vidisha Modi 5 years, 7 months ago

I want my answer now only

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sin2A=2sinAcosA

Posted by Monu Ray 5 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Arjun Kashyap 5 years, 7 months ago

Sin(A+A)=sinAcosA+sinAcosA=> 2sinAcosA

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If least prime factor of 'a' is 5 and least prime factor of 'b' is 13, then what is the least prime factor of a+b?

Posted by Namrata Nandeibam 5 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Timanasha Kumari 5 years, 7 months ago

5+13=18 ,which is an even number.so least prime factor of a+b = 2

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Chapter 1; exercise 1.1;que. No. 1

Posted by Harshit Kashyap 5 years, 7 months ago

CBSE > Class 10 > Mathematics

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I am not able to understand exercise 1.1 4 question

Posted by Vitti Kulhari 5 years, 7 months ago

CBSE > Class 10 > Mathematics

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If HCF a and b I'd 12 and products of these numbers is 1800,then find the LCM these numbers

Posted by Sree Nath 5 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Stranger?♋ Things 5 years, 7 months ago

150

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Factors could explained

Posted by Bhanu Pratap Singh 5 years, 7 months ago

CBSE > Class 10 > Mathematics

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What is the division algorithm lemma

Posted by Meena Dewli 5 years, 7 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 5 years, 7 months ago

According to Euclid’s Division Lemma if we have two positive integers a and b, then there exist unique integers q and r which satisfies the condition a = bq + r where 0 ≤ r ≤ b.

The basis of the Euclidean division algorithm is Euclid’s division lemma. To calculate the Highest Common Factor (HCF) of two positive integers a and b we use Euclid’s division algorithm. HCF is the largest number which exactly divides two or more positive integers. By exactly we mean that on dividing both the integers a and b the remainder is zero.

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8-00000000000000000=

Posted by Kulraj Singh?? 5 years, 5 months ago

CBSE > Class 10 > Mathematics