A quadratic equation is very important for a student who studies in 10th std or competitive exam. I learned one. I've searched before and not so many people know about it, so I'm helping you guys now....
Q. If the sum of first m terms of an AP is 2m2 + 3m, then what is its second term? Q. Find the value of ‘k’ so that the zeros of the quadratic polynomial 3x2 – kx + 14 are in the ratio...
1.3 - Cardinality of sets 1. Let A,B, C are the three sets, then n(A)=17, n(B)=17, n(C)=17, n(BnC)=6, n(AnC)=5, and n(AnBnC)=2 then find n(AUBUC). Solution: n(AUBUC). = n(A) + n(B) + n(C) - n(AnB)-....