Number System 728.038 x 54.978 - 72.016 x 85.250 = ? 43900 23900 33900 53900 43900 23900 33900 53900 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 728 x 55 - 72 x 85.25 = 40040 - 6138 = 339900
Number System When 732 is subtracted form the square of a number, the answer that is obtained is 5280. What is the number? 97 99 101 103 97 99 101 103 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 - 732 = 5280 x2 = 5280 + (70+3)2 = 5280 + 4900 + 420 + 9 = 10609= 10000 + 2(100)(3) + 32 = (100 + 3)2x = 100 + 3 = 103.
Number System The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is? 11 5 7 3 11 5 7 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 25xy = 144(x- y)2 = (x + y)2 – 4xy(x- y)2 = 625 – 576 => (x – y) = 7
Number System (164 x 175) x ? = 258300 11 2 5 9 11 2 5 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 258300 / 164 x 175 = 9
Number System If (47)² is added to the square of a number the answer thus obtained is 2290. What is the number ? 8 7 10 9 8 7 10 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore, x² + (47)² = 2290Therefore, x² = 2290 - 2209 = 81Therefore, x = 9
Number System 6.4 x 8.5 x 25/3.2 x 12.5 = ? 2.3 5.6 4.5 3.4 2.3 5.6 4.5 3.4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 6.4 x 8.5 x 2.5/3.2 x 12.5 = 3.4
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