Question

ALGEBRAIC CARDS Three friends have a set of 6 algebraic cards as shown below. Each card has algebraic expressions written on it. Here, x is a positive integer. Rohan picks a card whose value is always even. Meera picks a card which is always a multiple of 3. Sid picks two cards such that product of values on both the cards is 4x^2 − 1. Answer the following : Question 1: Which cards are picked by Rohan? Question 2: Which cards are picked by Meera? Question3 : Which cards are picked by Sid? Question 4: How did you come to the conclusion about the card picked by Sid? Question 5: How many cards are not picked by any one of the three friends?

Answer 1

Answer:

Rohan picked the card of 5th one4(3×+1)

sid= 2x+1×2x-1