Question
An Ap consists of 21 terms.the sum of three terms in the middle is 129 and the last three terms is 237.find the A.P
prove that lone segment joining the points of contact of two parallel tangents passes through the centre
Maths
Feb. 23, 2018, 3:49 p.m.
Answer
A box contain 12 balls of which some are red . If 6 more red ball put in box and a ball is draw at random the probability of drawing red ball doubles than what was it before . Find the number of red balls in bag
