Number System If the sum of four consecutive numbers is 370, which the following is the third lowest number among them 89 90 92 91 89 90 92 91 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the four consecutive numbers be x, (x + 1), (x + 2), (x + 3) thenx + (x + 1) + (x + 2) + (x + 3) = 370= 4x + 6 = 370∴ x = 364/4 = 91∴ third lowest number among them = x + 1= 91 + 1 = 92
Number System 3√103823 = ? 52 41 44 47 52 41 44 47 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 3√103823 = 3√47 x 47 x 47 = 47
Number System What is the value of ? in the following equations ? 72/? = ?/50 60 80 40 100 60 80 40 100 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 72 x 50= (6 x 6 x 2) x (5 x 5 x 2)= (6 x 5 x 2)² = (60)²∴ ? = 60
Number System ?125÷5x ?=6265 1452 153 124 1253 1452 153 124 1253 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1253
Number System What least number should be added to 8602 to make it a perfect square ? 51 47 36 41 51 47 36 41 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP So, (93)² = 8649So, the required number to be added to make a perfect square = 8649 - 8602 = 47
Number System If the difference between a number and two-fifths of that number is 45 what is the number ? 75 76 77 78 75 76 77 78 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x ∴ x - 2x/5 = 45∴ x = 75
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