Number System The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is? 3 7 5 11 3 7 5 11 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 3√103820 x 3√274620 = ? 3055 3045 3065 3035 3055 3045 3065 3035 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3√103820 = 47 and 3√274620 = 65 ∴ ? = 47 x 65 = 3055
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 34 35 36 33 34 35 36 ANSWER DOWNLOAD EXAMIANS APP
Number System If (74)² is added to the square of a number the answer so obtained is 7780. What is the number ? 48 47 49 50 48 47 49 50 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.or, x² + (74)² = 7780or, x² = 7780 - 5476 = 2304∴ x = 48
Number System 4500 * ? = 3375 2/5 3/5 1/4 3/4 2/5 3/5 1/4 3/4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4500 * x = 3375= x = 3375/4500 = 3/4
Number System Complete the series : 1, 2, 3, 5, 8, 13 .... 4 7 1 9 4 7 1 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1
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