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(i) To draw the graph of 4x + 5y = 19, find y when x=1.(A) 4 (B) 3 (C) 2 (D) - 3(ii) Which of the following is the value of the discriminant for√21 – 5x + √2=0?(A) - 5 (B) 17 (C) 2 (D) 22-5(iii) What is the sum of the first 20 terms of an A.P., if a=4 and t20 = 36?(A) 40 (B) 200 (C) 400 (D) 800(iv) Which number cannot represent a probability?(A) 15% (B) (C)0,7 (D) 1.5 |
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