Girish wants to participate in the …

Girish wants to participate in the 200 m Sprint. He can currently run that distance in 45 sec. But he  wants to do that in under 30 sec. With each day of practice, it takes him 2 sec less. Respond to the above situation by answering the questions given below.  (a)  Which of the following forms an A.P for the above given situation.  (i) 45, 90, 180, ....... (ii) 45 , 47, 49,.......... (iii) 45, 43, 41, ....... (iv) −45, −47, −48 , ......1  (b)  What is the minimum number of days he needs to practice till his goal is accomplished.  (i) 8 days (ii) 8.5 days (iii) 9 days (iii) none of these1  (c)  Which of following term is not in the A.P of the above given situation.  (i) 31 (ii) 30 (iii) 29 (iv) 271  (d)  If x , y, z are in A.P, then ��−��  ��−�� is equal to _____. (i) ½ (ii) 2 (iii) 1 (iv) 0   1     (e)  The nth term of the sequence a, a + d, a + 2d,… is  (i) a + nd (ii) a – (n – 1)d (iii) a + (n – 1)d (iv) n + nd1

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Find the nature of quadratic equation x^2 +x -5 =0

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X-y=5

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