Prove that:

OR

Prove that:

Two similar triangles ABC and PQR have their areas 25 cm² and 49 cm² respectively. If QR = 9.8 cm, find BC.

Divide (2x² – x + 3) by (2 – x) and write the quotient and the remainder.

In a family of three children, find the probability of having at least two boys.

OR

Two dice are tossed simultaneously. Find the probability of getting

(i) An even number on both dies.

(ii) the sum of two numbers more than 9.

In a lottery, there are 10 prizes and 25 blanks. What is the probability of getting a prize?