Number System The product of two consecutive position odd numbers is 6723. What is the smaller number? 74 79 83 71 74 79 83 71 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP n x (n + 2) = 6723= n² + 2n - 6723 = 0= n² + 83n - 81n - 6723 = 0= n(n + 83) - 81 (n + 83) = 0Therefore, (n - 81) (n + 83) = 0Therefore, n = 81, n + 2 = 83
Number System 7.8% of 12.5 + 2.5% of 161 = ? 9 12 5 2 9 12 5 2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 7.8 x 12.5/100 + 2.5 x 161/100= 0.975 + 4.025= 5
Number System A certain number successively divided by 2, 5 and 7 leaves remainders 1, 2 and 3 respectively. When the same number is divided by 70, what is the remainder? 33 36 35 34 33 36 35 34 ANSWER DOWNLOAD EXAMIANS APP
Number System Difference between two numbers is 5, six times of the smaller lacks by 6 from the four times of the greater. Find the numbers? 11, 6 12, 7 12, 9 10, 5 11, 6 12, 7 12, 9 10, 5 ANSWER DOWNLOAD EXAMIANS APP
Number System If R2 = S3 = K, where R, S and K are integers. Find the smallest positive integral value of K. (Greater than 1) 64 75 88 54 64 75 88 54 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 64
Number System √(17)² + (17)² + (5)² - 2 = ? 16 17 18 19 16 17 18 19 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √49 + 289 + 25 - 2 = √361 = 19
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