Number System 4.78% of 1255 + 3.24% of 440=0.5% of ? 12849 11849 14849 13849 12849 11849 14849 13849 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 If (74)² is added to the square of a number the answer so obtained is 7780. What is the number ? 47 50 49 48 47 50 49 48 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.or, x² + (74)² = 7780or, x² = 7780 - 5476 = 2304∴ x = 48
Number System (95.6x 910.3) ÷ 92.56256 = 9? 12.24 14.44 15.54 13.34 12.24 14.44 15.54 13.34 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 13.34
Number System On converting the following base-2 numeral in base ten, 1101101, we get 109 106 107 108 109 106 107 108 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 109
Number System An urn contains 9 blue, 7 white and 4 black balls. If 2 balls are drawn at random, then what is the probability that only one ball is white ? 90/190 89/190 92/190 91/190 90/190 89/190 92/190 91/190 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total possible outcomes = 20C2 = 20 x 19/1 x 2 = 190Total favourable outcomes = 7C1 x 13C1 = 7 x 13 = 91∴ Required probability = 91/190
Number System 486+32×25—59=? 582 528 596 567 582 528 596 567 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 528
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