Number System The difference between the two digit number and the number obtained by interchanging its digits is 54. The difference between the digits is? Nothing can be said. 1 4 6 Nothing can be said. 1 4 6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (10x + y) – (10y + x) = 54x – y = 6
Number System If a number is subtracted from its square we get 272. Find the number? 17 24 14 22 17 24 14 22 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 – x = 272 => x =17
Number System If 70% of an equal to 40% of b, then ratio between a and b is? 7: 4 7: 11 None 4: 7 7: 4 7: 11 None 4: 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 70 a = 40 ba: b = 4: 7
Number System Two third of three- fifth of one fourth of a number is 24, what is 30% of that number? 90 72 42 69 90 72 42 69 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 2/3 * 3/5 * 1/4 = 24x = 240240 * 30/100 = 72
Number System A number when, 28 subtracted from it reduces to its one third. What is the value of 50% of that number? 21 42 24 84 21 42 24 84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2/3 x = 28 => x = 4242 * 1/2 = 21
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