Question 2The radius of a circle is given as 5cm subject to an error of 0.1cm. What is the percentage error in the area of the circle?A.1/25B.1/4C.4D.25Objective Show full explanation
Question 3What is the value of x satisfying the equation 42x/43x = 2A.-2B.-1/2C.1/2D.2Objective Show full explanation
Question 6A man invested a sum of N280.00 partly at 5% and partly at 4%. If the total interest is N12.80 per annum, find the amount invested at 5%A.N14.00B.N120.00C.N140.00D.N160.00Objective Show full explanation
Question 7Ice forms on a refrigerator ice box at the rate of 4.06g per minute after 1 minute. if initially there were 2g of ice, find the mass of ice formed in 5 minutesA.19.5B.17.0C.14.5D.12.5Objective Show full explanation
Question 8Obtain a maximum value of the function f(x) = x³ - 12x + 11A.-5B.-2C.2D.27Objective Show full explanation
Question 9Two perfect dice were thrown together. Determine the probability of obtaining a total score of 8A.1/12B.5/36C.1/8D.7/36Objective Show full explanation
Question 10The probability of an event P is 3/4 while that of another event Q is 7/8, if the probability of both P and Q is 1/12, What is the probability of either P or Q?A.1/95B.1/8C.5/6D.11/12Objective Show full explanation