maths sample paper class 12 cbse board

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Cbse Extends Deadline For Submission Of School Affiliation ...


                                      maths sample paper class 12 of cbse board exam




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Compound Interest class 8 chapter6(notes) maths definition, formula

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Compound Interest Definition Compound interest is the interest calculated on the principal and the interest accumulated over the previous period. It is different from the simple interest where interest is not added to the principal while calculating the interest during the next period. Compound interest finds its usage in most of the transactions in the banking and finance sectors and also in other areas as well. Some of its applications are: Increase or decrease in population. The growth of bacteria. Rise or depreciation in the value of an item. Compound Interest Formula The compound interest formula is given below: Compound Interest = Amount – Principal Where the  amount  is given by: Where, A= amount P= principal R= rate of interest n= number of times interest is compounded per year It is to be noted that the above formula is the general formula for the number of times the principal is compounded in an year. If the amount is compounded annually, the amount is given as- ...
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ASSIGNMENT FOR CLASS 10 PROBABILITY

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PROBABILITY Class 10th Q1) One card is drawn from the deck of 52 playing cards. Find the probability of getting A ) A face card [3/13] b) A red face card [3/26] C ) A spade card [1/4] d) A king of red color [1/26] E ) A jack of heart [1/52] f) An ace card [1/13] g) A card of spade or ace [4/13] h) Either king or queen [2/13] i) Neither king nor queen [11/13] j) neither red nor queen [6/13] k) 10 of black suit [1/26] Q 2) A bag contains 3 white, 4 red, and 7 black balls. Find the probability of getting a) a black ball [1/2] b) A red or a black ball [11/14] c) A red white or black ball [1] d) not a red ball [5/7] e) neither white nor black ball [2/7] f) Not a white ball [11/14] Q 3) Two dice are thrown , what is the probability of getting a) Difference of the numbers on the two dice is 2 [2/9] b) sum of numbers on the two dice is 10 [1/12] c) Sum of numbers on two dice is more than 9 [1/6] d) A total of 9 or 11 [1/6] e) Both are odd number [1/4] f) Six as a product ...
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Simplifying Square Roots

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Simplifying Square Roots To simplify a square root: make the number inside the square root as small as possible (but still a  whole number ): Example: √12 is simpler as 2√3 Get your calculator and check if you want: they are both the same value! Here is the rule: when  a and b are not negative And here is how to use it: Example: simplify √12 12 is 4 times 3: √12 = √(4 × 3) Use the rule: √(4 × 3) = √4 × √3 And the square root of 4 is 2: √4 × √3 = 2√3 So √12 is simpler as 2√3 Another example: Example: simplify √8 √8 = √(4×2) = √4 × √2 = 2√2 (Because the square root of 4 is 2) And another: Example: simplify √18 √18 = √(9 × 2) = √9 × √2 = 3√2 It often helps to  factor  the numbers (into  prime numbers  is best): Example: simplify √6 × √15 First we can combine the two numbers: √6 × √15 = √(6 × 15) Then we factor them: √(6 × 15) = √(2 × 3 × 3 × 5) Then we see two 3s, and decide to "pull them out": √(2 × 3 ×...
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