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Showing posts from December 7, 2018

Simple and Compound Interest

When someone lends money to other He tries to take interest over the money landed. Generally, he takes the simple or compounded interest Terms related: principle: Amount amount one lends Interest: Extra money one asks when he lends money Rate: Rate at which lender charge interest time= Duration for which the lender lends money to someone Simple Interest: Let 's take that one person lends 100 rs to someone at a simple interest rate of 5 yearly.Then he will receive 5 rs as interest at end of 1st year. 10 rs at the end of 2nd year, 15 rs as interest at the end of 3rd year. Let's take someone lends 100rs for 3 years at a simple interest of 5% then He will receive 100+5*3=115 Let 's say a person lends money x at the simple interest rate of d% then He will receive. d rs every 100 rs every year. Simple Interest: (principle*rate*time(year))/100 Total amount = principle+ Simple interest Compound Interest: Let 's take that one person lends 100 rs to someone at...

Equations

In general we frame real life problems into some mathematical formula called equations in which we use constant and some variables(unknown) Example: Ram is 12 years old.Ram 's age is 3/5 of Shyam's age what is Shyam's age. Let Shyam's age is x then 3/5 of sham's age is 3*x/5 x*3/5=12 x=60/3=20 so Shyam's age is 20. Linear equations When there is a linear combination of unknown variables is there then eqn is linear Example: 3x+ 2y+ 4z=9 Non Linear Equations: Equations in which non linear combination of the variable is there then eqn is non linear. When any 2 unknown variable multiplication present in the equation then it is the nonlinear equation. Example: 2x+5yz=98 is a nonlinear equation because yz multiplication is there: Quadratic equation in one variable: x^2 + 4*x + 2=0 is non linear because unknown variable x is being multiplied in term x^2 Quadratic equation in many variable: x^2 + y^2 +z^2 + w=0 cubic equati...

Average

Average In this post, We will learn about average.  Average of any collection of data is the sum of data divide by number of data. Average = (Sum of observations /  Number of observations) Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.  problems The arithmetic mean of x, y and z is 80, and that of x, y, z, u and v is 75, where u=(x+y)/2 and v=(y+z)/2. If x ≥ z, then the minimum possible value of x is (CAT 2018) As specified in the question mean of x and y and z is 80 x+y+z=3*80 mean of x, y, z,u,v is 75 x+y+z+u+v=75*5 2u=x+y 2v=y+z x+y+z+((x+y+y+z)/2)=75*5 y+3(x+y+z)=75*10 y=750-720 y=30 since x+y+z=240 y=30 so x+z=210 since x>=z so minimum value of x=210/2 = 105 Problem2: In first 5 inings sehwag has scored at average of 40. In sixth ining He had scored 52 what is His average after 6th ining. one simple approach is getting total score divided by no of inin...

Ratio and Proportion

Ratio and Proportion In this post, We will learn about ratio and proportion.  Ratio is a way to compare two quantity by using division. This is a relative comparison bw 2 quantities. it says how much x compare to y when we are comparing x and y.  A ratio can be written in three different ways and all are read as "the ratio of x to y" x to y x:y x/y A proportion on the other hand is an equation that says that two ratios are equivalent. For example 1 litter water mixed in 5 litter milk is equivalent to 2 litter water mixed in 10 litter milk. 5/1 = 10/2 A proportion is read as "x is to y as z is to w" x/y = w/z Where y, z ≠ 0 Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above. 

New India Assurance Corporation Limited Recruitment

New India Assurance Corporation Limited Recruitment    NIACL  has released a notification for the post of   Administrative Officer Company Name NIACL Post Name    Administrative Officer State India Salary Rs. 32,795 Number of Vacancy 312 Eligibility Graduation Degree Last Date 26-12-2018 Application Details Job Notification Apply Online Job Application New India Assurance Corporation Limited Recruitment    Government Jobs in India Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.