Number System The difference between a positive proper fraction and its reciprocal is 9/20. The fraction is: 5/4 3/10 4/5 3/5 5/4 3/10 4/5 3/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1/x - x = 9/20 20x2 + 9x - 20 = 0 20x2 + 25x - 16x - 20 = 0 5x(4x + 5) -4(4x + 5) = 0(4x + 5)(5x - 4) = 0x = 4/5
Number System √343 = ? 20 19 21 18 20 19 21 18 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √343 = 18
Number System By how much is 3/5th of 875 greater than 2/3 of 333? 303 199 362 233 303 199 362 233 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/5th of 875 is greater than 2/3rd of 333= 3/5 * 875 - 2/3 * 333= 525 - 222 = 303.
Number System If 2^(2x-1) = 8^(3-x), then the value of x is: 9 2 6 5 9 2 6 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2
Number System 1827÷ 36 x ?=162.4 3.2 2.6 1.9 4.3 3.2 2.6 1.9 4.3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3.2
Number System The average of 7 consecutive even numbers A, B, C, D, E, F and G is 36. What is the product of ' C and 'E' ? 1327 1468 1292 1168 1327 1468 1292 1168 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP A + B + C + D + E + F + G/7 = 36Therefore, D = 36Therefore, C = 34, E = 38Therefore, Product = 34 x 38 = 1292
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