Mathematics
In an A.P., eight times of 8th term is equal to fifteen times the fifteenth term. Find the 23rd term of the A.P.
Related Questions
A(8, 6), B(10, -10) and C(4, -4) are the vertices of triangle ABC. If P is the mid-point of side AB and Q is mid-point of side AC, show that PQ is parallel to side BC also show 2 × PQ = BC.
Prove that : tan2 A + cot2 A + 2 = sec2 A. cosec2 A
Cards numbered 11 to 60 are kept in a box. If a card is drawn at random from the box, find the probability that the number on the drawn card is :
(i) a perfect square number
(ii) divisible by 5
(iii) a prime number less than 20.