Number System If the following fractions 7/6, 6/7, 5/3, 8/13 and 6/5 are arranged in descending order, which will be the last in the series? 9/13 8/13 6/13 7/13 9/13 8/13 6/13 7/13 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 7/6 = 1.166, 6/7 = 0.857,5/3 = 1.66,8/13 = 0.615,6/5 = 1.2Therefore, 5/3 > 6/5 > 7/6 > 6/7 > 8/13
Number System If the difference between a number and its three-fourth is 18, find the number. 72 68 57 61 72 68 57 61 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x - 3x/4 = 18= x/4 = 18= x = 4 x 18 = 72
Number System If the difference between a number and two-fifths of that number is 45 what is the number ? 75 77 76 78 75 77 76 78 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x ∴ x - 2x/5 = 45∴ x = 75
Number System The sum of five consecutive numbers is 190. What is the sum of the largest and the smallest number ? 74 73 76 75 74 73 76 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + x + 1 + x + 2 + x + 3 + x + 4= 190= 5x + 10 = 190= 5x = 190 - 10 = 180= x = 180/5 = 36The largest number = 36 + 4 = 40∴ Required sum = 36 + 40 = 76
Number System 16.23 x 12.9 + 17.32 = ? None of these 226.687 236.687 246.687 None of these 226.687 236.687 246.687 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 16.23 x 12.9 + 17.32= 209.367 + 17.32= 226.687
Number System The average of 7 numbers is 15, that of the first three is 6 and that of the last three is 23. What is the fourth number? 18 7 15 13 18 7 15 13 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4th No. = (Total of 7 Nos) - (Total of first three + total of last 3) = (15 x 7) - (6 x 3 + 23 x 3) = 105 - (18 + 69) =105 - 87 = 18
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