Number System The difference between a two-digit number and the number obtained by interchanging the two digits is 63. Which is the smaller of the two numbers? 92 70 29 Cannot be determined 92 70 29 Cannot be determined ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's digit be x and units digit by y.Then,(10x + y) - (10y + x) = 639(x - y) = 63x - y = 7Thus, none of the numbers can be determined.
Number System 6.4 x 8.5 x 25/3.2 x 12.5 = ? 2.3 4.5 5.6 3.4 2.3 4.5 5.6 3.4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 6.4 x 8.5 x 2.5/3.2 x 12.5 = 3.4
Number System 4.78% of 1255 + 3.24% of 440=0.5% of ? 12849 11849 13849 14849 12849 11849 13849 14849 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.5 x ?/100 = 4.78 x 1255/100 + 3.24 x 440/100= 59.989 + 14.256∴ ? = 74.245 x 100/0.5 = 14849
Number System Find the smallest number which should be multiplied with 520 to make it a perfect square. None of these 30 55 120 None of these 30 55 120 ANSWER DOWNLOAD EXAMIANS APP
Number System If 2^(2x-1) = 8^(3-x), then the value of x is: 6 2 5 9 6 2 5 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2
Number System If a number is multiplied by. three-fourth of itself, the value thus obtained is 10800. What is that number ? 60 120 260 180 60 120 260 180 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 3x/4 = 10800= x² = 10800 x 4/3 = 14400∴ x = √14400 = 120
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