Number System The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is: 40 20 None of these 30 40 20 None of these 30 ANSWER DOWNLOAD EXAMIANS APP
Number System In a division sum, the remainder is 0. As student mistook the divisor by 12 instead of 21 and obtained 35 as quotient. What is the correct quotient? 12 0 13 20 12 0 13 20 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number = (12 * 35) = 420Correct quotient = 420/21 = 20
Number System If 4 2/3 is subtracted form 10 1/2 and the difference is multiplied by 450, then what is the final answer? 2725 None of these 2875 2675 2725 None of these 2875 2675 ANSWER DOWNLOAD EXAMIANS APP
Number System 5358 * 51 = ? 273348 273268 273258 273358 273348 273268 273258 273358 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5358 * 51 = 5358 * (50 + 1) = 5358 * 50 + 5358 * 1= 267900 + 5358 = 273258
Number System What is the sum of 1 + 2 + 3+ ... + 27 ? 343 382 378 396 343 382 378 396 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Sum = 27 x (27 + 1)/2= 27 x 28/2= 27 x 14= 378
Number System (12)² - (4.4)² - (0.04)² = ? 124.6384 125.6384 129.6384 131.6384 124.6384 125.6384 129.6384 131.6384 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (12)² - (4.4)² - (0.04)²= 144 - 19.36 - 0.0016= 124.64 - 0.0016= 124.6384
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