Number System How many numbers between 300 and 800 can be by using digits 2, 4, 5, 6 and 0 ? 52 56 48 36 52 56 48 36 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∴ Reqd . numbers = 3 x 4P2 = 3 x 12 = 36
Number System The sum of three consecutive numbers is 87. The greatest among these three number is: 28 29 26 30 28 29 26 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x, x + 1 and x + 2 Then,x + (x + 1) + (x + 2) = 873x = 84x = 28Greatest number, (x + 2) = 30.
Number System If the fractions8/5,7/2,9/5,5/4,4/5 are arranged in descending order of their values, which one will be fourth? 5/4 7/9 11/13 1/3 5/4 7/9 11/13 1/3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5/4
Number System If the difference between the squares of two consecutive numbers is 47, what is the smaller number ? 24 23 26 25 24 23 26 25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be (x + 1) and x.Therefore, (x + 1)² - x² = 47x² + 2x + 1 - x² = 472x + 1 = 47Therefore, x = 46/2 = 23
Number System A certain number of two digits is three times the sum of its digits. If 45 be added to it, the digits are reversed. The number is: 22 24 27 30 22 24 27 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 27
Number System Three seventh of a number is 12 more than 40% of that number. What will be the 60% of that number? 126 148 210 248 126 148 210 248 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/7 x – 40/100 x = 12x = 35 * 1235 * 12 * 60/100 = 252/2 = 126
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