Number System The population of a town increases by 15% in the first year and decreases by 25% in the second year. If its current population is 168480 then what will be its population after two years ? 145314 145914 145714 145214 145314 145914 145714 145214 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Population of the town= 168480 x 115/100 x 75/100= 145314
Number System When (21)² is subtracted from the square of a number the answer obtained is 1584. What is the number ? 45 55 65 35 45 55 65 35 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x² - (21)² = 1584= x² - 441 = 1584 = x² = 1584 + 441 = 2025∴ x = √2025 = 45
Number System Write the next number in the series : 14, 16, 13, 17, 12, 18, 11 .... 7 19 15 1 7 19 15 1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 19
Number System (800 / 64) * (1296 / 36) = ? 460 420 None of these 500 460 420 None of these 500 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given Exp.= 800/64 * 1296/36 = 12.5 * 36 = 450
Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? 2 6 None 4 2 6 None 4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4
Number System What is the difference between the local value of 7 and 5 in the number 2574? 430 570 403 413 430 570 403 413 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 500 – 70 = 430
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