Number System 1827÷ 36 x ?=162.4 4.3 2.6 1.9 3.2 4.3 2.6 1.9 3.2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3.2
Number System The sum of the ages of a son and father is 65 years. After 5 years the age of father will be double of the age of son. What is the age of son ? 20 years 19 years 18 years 17 years 20 years 19 years 18 years 17 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the age of the son be x and the age of the father be y.Therefore, x + y = 65 ..........(i)or, 2 x (x + 5) = (y + 5)or, 2x + 10 = y + 5or, 2x - y = 5 ...................(ii)From equations (i) and (ii), x = 20, y = 45
Number System 3√103823 = ? 41 47 44 52 41 47 44 52 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 3√103823 = 3√47 x 47 x 47 = 47
Number System If a number is subtracted from its square we get 272. Find the number? 17 22 14 24 17 22 14 24 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 – x = 272 => x =17
Number System The difference between a positive proper fraction and its reciprocal is 9/20. The fraction is: 3/10 4/5 3/5 5/4 3/10 4/5 3/5 5/4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1/x - x = 9/20 20x2 + 9x - 20 = 0 20x2 + 25x - 16x - 20 = 0 5x(4x + 5) -4(4x + 5) = 0(4x + 5)(5x - 4) = 0x = 4/5
Number System The sum of three consecutive numbers is 87. The greatest among these three number is: 29 30 26 28 29 30 26 28 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.
EXAMIANS