Number System The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is? 11 7 5 3 11 7 5 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 124, 235, 447, 760, 1174, ? 1689 1389 1589 1489 1689 1389 1589 1489 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP +111, +212, +313, +414
Number System One half of a two digit number exceeds its one third by 6. What is the sum of the digits of the number? 5 9 7 3 5 9 7 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x/2 – x/3 = 6=> x =63 + 6 = 9
Number System Subtracting 30 from a number, the remainder is one fourth of the number. Find the number? 45 22 1/2 30 40 45 22 1/2 30 40 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/4 x = 30 => x = 40
Number System 56.21 +2.36+5.41 —21.4+1.5=? 34.08 54.08 44.08 64.08 34.08 54.08 44.08 64.08 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 44.08
Number System Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number? N(N + 1)/2 N2 N2 + 1 N(N + 1) N(N + 1)/2 N2 N2 + 1 N(N + 1) ANSWER DOWNLOAD EXAMIANS APP
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