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to find a square root of any no. in 5 seconds

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hello friends, you thinks how can we find a square root of any no. in just 5 seconds but yes we can do this we found the trick to solve this so let's begin for finding square root in 5 second we have to learn the squares of 1 to 10by heart here is a table of squares:- we have to learn the squares by heart lets take a example 9025 as you knows the square root of any 4 digit no. is 2 digits so there are two no. we have to find step 1 lets make a pair of two two digits the first pair is 90 and second pair is 25 then see in which interval the 90 comes this will give you tenth place now here the 90is placed between interval of 9th square and 10th square here we have to choose a lowest no here i.e 9 so the 10th doit no is 9 step 2 after finding the tenth digit place no. we have to find the unit place no. to find the no lets take ours another pair i.e 25 here on the unit place of this pair is 5 so lets see in which unit place of square the 5 is the 5 is in unit ...
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simple trick to obtain a cube root of any no.

here for this method you had to remember the cubes of 1to 10 by heart. after that i give a guarantee that now you will able to find the cube root of any no in just 5 seconds for your help i am giving the cube of 1to 10 1cube:-1 2cube:-8 3cube:-27 4cube:-64 5cube:-125 6cube:-216 7cube:-343 8cube:-512 9cube:-729 10cube:-1000 for finding the cube root of 421875 here above you can observe that the unit place the cubes have all 0-9 no. you can observe that the cubes of 11to the 99 are only 6 digit answer so the the no which we are going to find a cube is a two digits. 1st step here in the example the unit place no is 5 so lets see the any cubes have 5in its unit place yes you got that the 5 cube is 125 so the unit place no of our cube is 5 next step to find the tens place no of our cube for this you have to cut last 3 digit no . of your question i.e in the example so the remaining no. is 421 lets observe in which cubes between the 421 is so the 421 is in bet...
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mathematics trignomatery simple way to remember formulas

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if you are unable to remember trignomatery formulas then you are on right place which helps you to remember formulas table formula table :- here is an simple trick for you 1st for obtaining sin angle measurements for 0 ,30,45,60,90degrees you have to write 0,1,2,3,4 respectively then devide each term by 4 and take a square root of each then you will able to fin the values of all angels of sin 2) to find a cos angles you have to do invert the sin angles as sin 90 degrees to cos 0 degree 3)for tan   θ  =sin  θ/cos     θ by putting the angle that you want to find you will able to obtain the values of tan   θ 4)for cot   θ=1/tan   θ simillary we can put the angle and find the values of cot  5)for sec   θ=1/cos   θ similarly as above 6)for cosec    θ=1/sin   θ yeah now you had found all the values of table congratulations formulas that you have to always remember  sin=1/cosec cos=1/sec tan=1/c...
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some questions and answers

example for roster form:- A={1,2,3,4,5,6,7} Exercise 1.1 Question 1: Which of the following are sets? Justify your answer. (i) The collection of all months of a year beginning with the letter J. (ii) The collection of ten most talented writers of India. (iii) A team of eleven best-cricket batsmen of the world. (iv) The collection of all boys in your class. (v) The collection of all natural numbers less than 100. (vi) A collection of novels written by the writer Munshi Prem Chand. (vii) The collection of all even integers. (viii) The collection of questions in this Chapter. (ix) A collection of most dangerous animals of the world. Answer 1: (i) The collection of all months of a year beginning with the letter J is a well-defined collection of objects because one can definitely identify a month that belongs to this collection. Hence, this collection is a set. (ii) The collection of ten most talented writers of India is not a well-defined collection because the criter...
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11th sets general info

Set:-well defined collection of objectsis called as sets signs for sets:- 1)U=universal set 2)∩=intersection set above set signs will used to represent sets. we can define any well defined collection with set for representation of sets there are 3 methods:- 1)venn digram 2)set builder form 3)roster form venn digram is easier method which is developed by scientist venn so they named it as a venn digram method set builder form eg A={x:xis a group of boys in a class}
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