1. (a) Draw a histogram to represent the following data : Pocket money in Rs. No. of Students 150 - 200 10 200 - 250 5 250 - 300 7 300 - 350 4 350 - 400 3   2. (b) Prove that (1 + tan A)2 + (1 − tan A)2 = 2 sec2A.   3. (c) The catalogue price of a computer set is Rs 45,000. The shopkeeper gives a discount of 7% on the listed price. He gives a further off-season discount of 4% on the balance. However, sales tax at 8% is charged on the remaining amount. Find : (i) The amount of sales tax a customer has to pay, (ii) The final price he has to pay for the computer set. (Type in the answers separated by commas. Leave no spaces around the commas.)